Are we in control of our decisions? | Dan Ariely

2,064,150 views ・ 2009-05-19

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Translator: Matic Peric Reviewer: Matej Golob
00:16
I'll tell you a little bit about irrational behavior.
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Povedal vam bom nekaj o neracionalnem obnašanju ljudi.
00:19
Not yours, of course -- other people's.
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Seveda, ne o vašem.
00:21
(Laughter)
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(smeh)
00:22
So after being at MIT for a few years,
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Po nekaj letih dela na MIT
00:26
I realized that writing academic papers is not that exciting.
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sem ugotovil, da pisanje znanstvenih člankov ni ravno vznemirljivo.
00:30
You know, I don't know how many of those you read,
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Saj veste. Ne vem sicer, koliko ste jih prebrali.
Niso zanimivi, ko jih bereš in pogosto niti ko jih pišeš.
00:33
but it's not fun to read and often not fun to write --
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00:35
even worse to write.
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Še slabše jih je pisati.
00:37
So I decided to try and write something more fun.
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Zato sem se odločil napisati nekaj bolj zabavnega.
00:40
And I came up with an idea that I would write a cookbook.
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Prišel sem na idejo o kuharski knjigi.
00:44
And the title for my cookbook was going to be,
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Z naslovom
"Večerjanje brez drobtin: Umetnost prehranjevanja nad koritom."
00:47
"Dining Without Crumbs: The Art of Eating Over the Sink."
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(smeh)
00:50
(Laughter)
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00:51
And it was going to be a look at life through the kitchen.
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Šlo naj bi za pogled na življenje iz kuhinjskega zornega kota.
00:54
I was quite excited about this.
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Bil sem kar navdušen nad tem. Pisal naj bi
00:56
I was going to talk a little bit about research,
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malo o raziskavah, malo o kuhinji.
00:58
a little bit about the kitchen.
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Veste, toliko stvari počnemo v kuhinji, da sem mi je zdela ideja zanimiva.
01:00
We do so much in the kitchen, I thought this would be interesting.
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Napisal sem nekaj poglavij.
01:03
I wrote a couple of chapters, and took it to MIT Press and they said,
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In nesel sem jih na uredništvo MIT, kjer so rekli,
"Ljubko, vendar ni za nas. Najdi koga drugega."
01:07
"Cute, but not for us. Go and find somebody else."
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01:10
I tried other people, and everybody said the same thing,
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Poskušal sem še pri ostalih, vendar so vsi odgovorili enako,
"Ljubko, vendar ni za nas."
01:13
"Cute. Not for us."
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01:15
Until somebody said,
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Dokler ni nekdo dejal,
01:18
"Look, if you're serious about this,
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"Poglej, če resno hočeš to,
01:20
you have to write about your research first; you have to publish something,
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moraš prvo napisati knjigo o tvojem raziskovanju. Najprej moraš izdati nekaj.
01:23
then you'll get the opportunity to write something else.
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Potem boš dobil priložnost pisati o čem drugem.
Če si res želiš, moraš to naredi na tak način."
01:26
If you really want to do it, you have to do it."
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Potem sem odgovoril, "Veste, nočem pisati o svojem raziskovanju.
01:28
I said, "I don't want to write about my research.
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01:30
I do it all day long,
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To delam cele dneve. Hočem pisati o u drugih rečeh.
01:32
I want to write something a bit more free, less constrained."
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Nekaj svobodnejšega, manj omejujočega."
01:35
And this person was very forceful and said,
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Ampak ta oseba je bila zelo vztrajna in je rekla,
01:38
"Look, that's the only way you'll ever do it."
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"Poglej, samo na ta način boš lahko to izvedel."
01:40
So I said, "Okay, if I have to do it --"
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In sem rekel, "OK, če že moram --"
01:43
I had a sabbatical.
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Vzel sem si daljši dopust in si rekel, "Pisal bom o svojem delu
01:44
I said, "I'll write about my research, if there's no other way.
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če ni druge poti. In nato bom lahko naredil še kuharsko knjigo."
01:47
And then I'll get to do my cookbook."
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In tako sem napisal knjigo o svojih raziskavah.
01:49
So, I wrote a book on my research.
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Izkazalo se je za kar zabavno. Na dva načina.
01:52
And it turned out to be quite fun in two ways.
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01:54
First of all, I enjoyed writing.
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Kot prvo sem užival v pisanju.
01:57
But the more interesting thing was that I started learning from people.
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Ampak bolj zanimivo je bilo,
da sem se začel učit od ljudi.
02:01
It's a fantastic time to write,
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Trenutno je izjemen čas za pisanje.
02:02
because there's so much feedback you can get from people.
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Ljudje dajejo veliko povratnih informacij.
02:05
People write to me about their personal experience,
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Pišejo mi o osebnih doživetjih,
02:08
and about their examples, and where they disagree,
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o njhovih primerih, s čim se ne strinjajo
02:10
and their nuances.
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in podobno.
02:12
And even being here -- I mean, the last few days,
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In tudi v teh nekaj dneh tukaj
02:14
I've known heights of obsessive behavior
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sem spoznal visoke nivoje obsesivnega obnašanja,
02:17
I never thought about.
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ki si ga nikoli nisem predstavljal.
02:19
(Laughter)
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(smeh)
02:20
Which I think is just fascinating.
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Kar se mi zdi fascinantno.
02:22
I will tell you a little bit about irrational behavior,
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Povedal vam bom nekaj malega o neracionalnem obnašanju.
02:25
and I want to start by giving you some examples of visual illusion
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In začel bom z nekaj primeri optičnih iluzij,
02:28
as a metaphor for rationality.
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kot metaforo za racionalnost.
02:30
So think about these two tables.
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Razmislite o teh mizah.
02:32
And you must have seen this illusion.
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Verjetno ste že videli to iluzijo.
02:34
If I asked you what's longer, the vertical line on the table on the left,
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Če vas vprašam katera je daljša, navpična stranica na levi mizi
ali vodoravna stranica na desni mizi?
02:38
or the horizontal line on the table on the right,
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02:40
which one seems longer?
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Katera se vam zdi daljša?
02:43
Can anybody see anything but the left one being longer?
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Ali se komu ne zdi leva daljša?
02:46
No, right? It's impossible.
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Nemogoče je, ne?
02:48
But the nice thing about visual illusion is we can easily demonstrate mistakes.
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A lepa lastnost pri optičnih iluzija je, da z lahkoto pokažemo napake.
02:51
So I can put some lines on; it doesn't help.
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Tako lahko dodam nekaj črt gor. Ne pomaga.
02:54
I can animate the lines.
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Lahko animiram črte.
02:56
And to the extent you believe I didn't shrink the lines,
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In v kolikor verjamete, da nisem skrajšal črt -
02:58
which I didn't, I've proven to you that your eyes were deceiving you.
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ki jih nisem - sem dokazal, da so vas oči pretentale.
03:03
Now, the interesting thing about this is when I take the lines away,
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Zanimivo pri vsem tem je,
če odstranim dodatne črte,
03:07
it's as if you haven't learned anything in the last minute.
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izgleda kot, da se v zadnji minuti niste ničesar naučili.
03:09
(Laughter)
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(smeh)
03:12
You can't look at this and say, "Now I see reality as it is."
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Ne morete pogledati in reči: "OK, sedaj resnično vidim kako dolge so."
03:15
Right? It's impossible to overcome this sense that this is indeed longer.
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Je res? Nemogoče je premagati
občutek, da je ta v resnici daljša.
03:20
Our intuition is really fooling us
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Intuicija nas zavaja vedno znova, predvidljivo in konsistentno.
03:21
in a repeatable, predictable, consistent way.
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03:23
and there is almost nothing we can do about it,
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In skoraj ničesar ne moremo storiti glede tega.
03:26
aside from taking a ruler and starting to measure it.
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Razen izmeriti sliko z merilom.
03:29
Here's another one. It's one of my favorite illusions.
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Tukaj je še ena. Ta je ena mojih najljubših iluzij.
03:32
What color is the top arrow pointing to?
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Kakšna je barva, ki jo kaže zgornja puščica?
Rjava. Hvala.
03:36
Audience: Brown. Dan Ariely: Brown. Thank you.
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Spodnja? Rumena.
03:38
The bottom one? Yellow.
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Izkaže se, da sta enaki.
03:40
Turns out they're identical.
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03:41
Can anybody see them as identical?
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Ju lahko kdo vidi kot enaki?
03:43
Very, very hard.
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Zelo, zelo težko.
03:45
I can cover the rest of the cube up.
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Lahko pokrijem ostali del kocke.
03:47
If I cover the rest of the cube, you can see that they are identical.
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In če pokrijem ostali del kocke, lahko vidite, da sta barvi identični.
03:50
If you don't believe me, you can get the slide later
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In če mi ne verjamete, lahko dobite to prosojnico kasneje
in se sami prepričate, da sta enaki.
03:53
and do some arts and crafts and see that they're identical.
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03:55
But again, it's the same story, that if we take the background away,
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Toda, spet ista zgodba,
če odstranim ozadje,
03:59
the illusion comes back.
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se iluzija vrne. Je res?
04:01
There is no way for us not to see this illusion.
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Nikakor se ne moremo izogniti tej iluziji.
04:04
I guess maybe if you're colorblind, I don't think you can see that.
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Morda edino, če ste barvno slepi.
04:07
I want you to think about illusion as a metaphor.
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Hočem, da pomislite na iluzijo kot metaforo.
04:10
Vision is one of the best things we do.
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Vid je nekaj, kar počnemo zelo dobro.
04:12
We have a huge part of our brain dedicated to vision --
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Velik del možganov je namenjen vidu.
04:14
bigger than dedicated to anything else.
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Večji kot za karkoli drugega.
04:16
We use our vision more hours of the day than anything else.
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Čez dan namenimo večino časa vidu in gledanju.
04:20
We're evolutionarily designed to use vision.
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In evolucijsko smo prirejeni za vid.
04:22
And if we have these predictable repeatable mistakes in vision,
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In če imamo tako predvidljive in ponovljive napake pri našem vidu
04:25
which we're so good at,
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- v čemer smo sicer zelo dobri -
04:27
what are the chances we won't make even more mistakes
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kakšna je potem verjetnost, da ne bomo delali še več napak
04:29
in something we're not as good at, for example, financial decision-making.
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pri nečem, kjer nismo tako dobri.
Kot na primer finančne odločitve.
04:33
(Laughter)
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(smeh)
04:35
Something we don't have an evolutionary reason to do,
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Nekaj, za kar nimamo evolucijskih razlogov.
04:37
we don't have a specialized part of the brain for,
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Za kar nimamo specializiranega dela možganov
in česar ne počnemo veliko časa vsak dan.
04:40
and we don't do that many hours of the day.
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Verjeti gre, da v takih primerih
04:42
The argument is in those cases,
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04:44
it might be that we actually make many more mistakes.
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dejansko počnemo veliko več napak.
04:48
And worse -- not having an easy way to see them,
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In še slabše - napak ne moremo enostavno opaziti.
04:50
because in visual illusions, we can easily demonstrate the mistakes;
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Pri optičnih iluzijah preprosto prikažemo napake.
04:54
in cognitive illusion it's much, much harder
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Pri kognitivnih iluzijah je mnogo težje
04:56
to demonstrate the mistakes to people.
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ljudem prikazati napake.
04:58
So I want to show you some cognitive illusions,
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Zato bi vam rad na enka način pokazal nekaj kognitivnih iluzij
05:01
or decision-making illusions, in the same way.
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ali odločitvenih iluzij.
05:04
And this is one of my favorite plots in social sciences.
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Ta je eden izmed mojih najljubših grafov iz družbenih ved.
05:07
It's from a paper by Johnson and Goldstein.
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Iz članka avtorjev Johnson and Goldstein.
05:11
It basically shows the percentage of people who indicated
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Prikazuje
odstotek ljudi, ki so pokazali
05:15
they would be interested in donating their organs.
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zanimanje za doniranje svojih organov.
05:19
These are different countries in Europe.
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To so različne države v Evropi in
05:21
You basically see two types of countries:
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vidimo lahko dva tipa držav.
05:23
countries on the right, that seem to be giving a lot;
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Države na desni, ki očitno dajejo veliko.
05:25
and countries on the left that seem to giving very little,
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In države na levi, ki očitno dajejo zelo malo
05:28
or much less.
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ali veliko manj.
05:30
The question is, why?
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Vprašanje je zakaj? Zakaj nekatere države dajejo veliko
05:31
Why do some countries give a lot and some countries give a little?
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in nekater zelo malo?
05:34
When you ask people this question,
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Ko zastaviš ljudem to vprašanje,
05:36
they usually think that it has to be about culture.
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si navadno mislijo, da je to verjetno zaradi različnih kultur.
Je tako? Koliko nekoga skrbi za soljudi in družbo.
05:39
How much do you care about people?
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05:40
Giving organs to somebody else
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Donirati organe nekomu
05:42
is probably about how much you care about society, how linked you are.
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je verjetno pogojeno s tem, koliko skrbiš za družbo, kako si povezan.
05:45
Or maybe it's about religion.
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Ali morda z religijo.
05:47
But if you look at this plot,
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Ampak če pogledamo na ta graf
05:49
you can see that countries that we think about as very similar,
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vidimo, da države za katere menimo, da so si podobne
05:52
actually exhibit very different behavior.
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v resnici kažejo precej različno obnašanje.
05:55
For example, Sweden is all the way on the right,
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Na primer, Švedska je skrajno desno.
05:57
and Denmark, which we think is culturally very similar,
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In Danska, za katero mislimo, da je kulturno podobna,
06:00
is all the way on the left.
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je skrajno levo.
06:02
Germany is on the left, and Austria is on the right.
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Nemčija je na levi, Avstrija na desni.
06:06
The Netherlands is on the left, and Belgium is on the right.
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Nizozemska na levi, Belgija ne desni.
06:09
And finally, depending on your particular version
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In končno, odvisno od vašega pogleda
06:12
of European similarity,
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na Evropsko podobnost,
06:14
you can think about the U.K. and France as either similar culturally or not,
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si lahko mislimo da sta Velika Britanija in Francija zelo podobni ali pa ne.
06:19
but it turns out that with organ donation, they are very different.
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Izkaže pa se, da organe donirajo povsem drugače.
06:23
By the way, the Netherlands is an interesting story.
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Mimogrede, Nizozemska je zanimiva zgodba.
06:25
You see, the Netherlands is kind of the biggest of the small group.
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Vidite lahko, da je najvišja od leve skupine držav.
06:30
It turns out that they got to 28 percent
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Izkaže se, da so dobili 28 odstotkov
06:33
after mailing every household in the country a letter,
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po tem, ko so poslali vsem gospodinjstvom pismo
06:36
begging people to join this organ donation program.
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kjer so rotili ljudi, da se pridružijo programu za doniranje organov.
06:39
You know the expression, "Begging only gets you so far."
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Prosjačenje vas pripelje le do neke meje.
06:42
It's 28 percent in organ donation.
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In pri doniranju organov je to 28 odstotkov.
06:45
(Laughter)
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(smeh)
06:47
But whatever the countries on the right are doing,
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Vendar karkoli že delajo države iz desne skupine,
06:49
they're doing a much better job than begging.
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delajo to veliko bolje od prosjačenja.
06:51
So what are they doing?
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Kaj torej delajo?
06:53
Turns out the secret has to do with a form at the DMV.
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Izkaže se, da je skrivnost v obrazcu za pristop k programu za donacijo organov.
06:56
And here is the story.
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Zgodba je sledeča:
06:58
The countries on the left have a form at the DMV
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Države iz leve skupine imajo obrazec,
07:00
that looks something like this.
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ki izgleda tako.
07:02
"Check the box below if you want to participate in the organ donor program."
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Odkljukajte ta kvadratek, če hočete sodelovati
v programu za donacijo organov.
07:06
And what happens?
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In kaj se zgodi?
07:08
People don't check, and they don't join.
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Ljudje tega ne odkljukajo. Torej se ne prijavijo.
07:11
The countries on the right, the ones that give a lot,
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V državah iz desne skupine, kjer jih veliko sodeluje,
07:13
have a slightly different form.
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pa je obrazec malenkost drugačen.
07:15
It says, "Check the box below if you don't want to participate ..."
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Odkljukajte kvadratek, če nočete sodelovati.
07:18
Interestingly enough, when people get this,
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Zanimivo je, da v tem primeru
ljudje tudi ne odkljukajo. Toda zdaj se s tem prijavijo.
07:21
they again don't check, but now they join.
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07:23
(Laughter)
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(smeh)
07:26
Now, think about what this means.
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Sedaj pa pomislite, kaj to pomeni.
07:29
You know, we wake up in the morning and we feel we make decisions.
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Zjutraj se zbudimo in si mislimo, da se sami odločamo.
07:33
We wake up in the morning and we open the closet;
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Zbudimo se in odpremo omaro.
07:35
we feel that we decide what to wear.
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In mislimo si, da sami odločamo o tem, kaj bomo oblekli.
07:37
we open the refrigerator and we feel that we decide what to eat.
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Odpremo hladilnik in spet si mislimo, da se sami odločamo glede hrane.
07:40
What this is actually saying,
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Ta graf pa nam pravi,
07:41
is that many of these decisions are not residing within us.
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da teh odločitev ne sprejemamo sami.
07:44
They are residing in the person who is designing that form.
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Odloča oseba, ki pripravlja obrazec.
07:47
When you walk into the DMV,
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1946
Ko vstopite v DMV (oddelek za motorna vozila)
07:49
the person who designed the form will have a huge influence
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2999
ima oseba, ki je obrazec pripravila, ogromen vpliv na to,
07:52
on what you'll end up doing.
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kaj boste na koncu izbrali.
07:54
Now, it's also very hard to intuit these results.
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Zelo težko je popolnoma doumeti ta fenomen. Pomislite:
07:57
Think about it for yourself.
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07:58
How many of you believe
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Koliko vas verjame,
08:00
that if you went to renew your license tomorrow,
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da če bi jutri podaljšali vozniško dovoljenje
08:02
and you went to the DMV,
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in bi vstopili v DMV
08:04
and you encountered one of these forms,
180
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2267
ter izpolnjevali enega izmed teh obrazcev,
08:06
that it would actually change your own behavior?
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da bi zares spremenili svojo odločitev?
08:08
Very hard to think that it would influence us.
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Zelo, zelo težko si predstavljamo, kaj na nas vpliva.
08:11
We can say, "Oh, these funny Europeans, of course it would influence them."
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Rečemo si lahko, "Oh, ti Evropejci. Seveda lahko vpliva na njih."
Ampak, ko razmišljamo o sebi,
08:14
But when it comes to us,
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08:16
we have such a feeling that we're in the driver's seat,
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2638
imamo občutek, da sedimo na voznikovem sedežu,
imamo občutek, da kontroliramo situacijo
08:19
such a feeling that we're in control and we are making the decision,
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in da sami sprejemamo odločitve.
08:22
that it's very hard to even accept the idea
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Zelo težko je sprejeti dejstvo,
da imamo v resnici
08:25
that we actually have an illusion of making a decision,
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2675
iluzijo, da se sami odločamo.
08:27
rather than an actual decision.
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2064
08:30
Now, you might say,
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Rekli boste:
08:32
"These are decisions we don't care about."
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2417
"Te odločitve so postranske"
08:34
In fact, by definition, these are decisions
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Res je, po definiciji so to odločitve
08:37
about something that will happen to us after we die.
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o nečem, kar se nam bo zgodilo po smrti.
08:39
How could we care about something less
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Ne zanima nas prav zelo,
08:41
than about something that happens after we die?
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kaj se bo zgodilo po naši smrti.
08:44
So a standard economist, somebody who believes in rationality,
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Ekonomist, nekdo ki verjame v racionalnost,
08:47
would say, "You know what?
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bi rekel, "Veste kaj? Cena dviga tistega pisala
08:48
The cost of lifting the pencil and marking a "V" is higher
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3452
in odkljukanja kvadratka, je višja
08:51
than the possible benefit of the decision,
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2141
od koristi, ki jo prinaša ta odločitev."
08:54
so that's why we get this effect."
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1798
Zato dobimo ta efekt.
08:55
(Laughter)
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1009
Ampak v resnici, ni zato, ker je lahko.
08:57
But, in fact, it's not because it's easy.
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2498
08:59
It's not because it's trivial. It's not because we don't care.
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3016
Ni zato, ker je trivialno. Ni zato, ker nas ne gane.
09:02
It's the opposite. It's because we care.
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2421
Nasprotno. To je zato, ker nas skrbi.
09:05
It's difficult and it's complex.
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1944
Zato ker je težavno in komplekso.
09:06
And it's so complex that we don't know what to do.
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2551
Tako kompleksno, da ne vemo kako se odločiti
09:09
And because we have no idea what to do,
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1976
in ker nimamo pojma kaj naj izberemo,
09:11
we just pick whatever it was that was chosen for us.
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3571
izberemo karkoli je že nekdo drug izbral za nas.
09:15
I'll give you one more example.
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Dal vam bom še en primer.
09:17
This is from a paper by Redelmeier and Shafir.
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Ta je iz članka avtorjev Redelmeier and Schaefer.
09:19
And they said, "Would this effect also happens to experts?
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V njem trdita, "Ta efekt je prisoten tudi pri strokovnjakih.
09:23
People who are well-paid, experts in their decisions,
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Ljudje, ki so dobro plačani za strokovne odločitve,
09:26
and who make a lot of them?"
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1356
velikokrat podležejo temu efektu."
09:28
And they took a group of physicians.
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2185
Vzeli so skupino zdravnikov
09:30
They presented to them a case study of a patient.
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in jim pokazali študijo pacienta.
09:32
They said, "Here is a patient. He is a 67-year-old farmer.
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3444
To je pacient. Je 67 letni kmet.
09:36
He's been suffering from right hip pain for a while."
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2730
Ima bolečine v desnem kolku.
09:38
And then, they said to the physicians,
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1834
Potem jim povejo
09:40
"You decided a few weeks ago
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"Pred nekaj tedni ste se odločili,
09:42
that nothing is working for this patient.
220
582160
1976
da nič ne pomaga temu pacientu.
09:44
All these medications, nothing seems to be working.
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Vsa ta zdravila. Nič ne kaže, da bi pomagalo.
09:46
So you refer the patient for hip replacement therapy.
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2772
Zato ste poslali pacienta na zamenjavo kolkov.
09:49
Hip replacement. Okay?"
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1727
Zamenjavo kolkov. Ja?"
09:51
So the patient is on a path to have his hip replaced.
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Pacient je torej na pol poti, da mu zamenjajo kolk.
09:54
Then they said to half of the physicians,
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594616
1969
In potem so polovici zdravnikov rekli,
09:56
"Yesterday, you reviewed the patient's case,
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2339
"Včeraj ste pregledovali pacientove datoteke
09:58
and you realized that you forgot to try one medication.
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2610
in ugotovili, da ste pozabili še eno od zdravil.
10:01
You did not try ibuprofen.
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1596
Niste poskusili z ibuprofenom.
10:04
What do you do? Do you pull the patient back and try ibuprofen?
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3325
Kaj boste storili? Boste odpovedali zamenjavo kolkov in poskusili z ibuprofenom?
10:07
Or do you let him go and have hip replacement?"
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2770
Ali boste pustili, da mu zamenjajo kolk?"
10:10
Well, the good news is that most physicians in this case
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2651
Dobra novica je, da v tem primeru večina zdravnikov
10:12
decided to pull the patient and try ibuprofen.
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odpove zamenjavo in poskusi z ibuprofenom.
10:15
Very good for the physicians.
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1740
Zelo dobro za zdravnike.
10:17
To the other group of physicians, they said,
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2067
Drugi polovici zdravnikov pa so rekli,
10:19
"Yesterday when you reviewed the case, you discovered there were two medications
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3849
"Včeraj, ko ste pregledovali pacientove datoteke,
ste ugovotili, da ste pozabili na dve zdravili.
10:23
you didn't try out yet -- ibuprofen and piroxicam."
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2516
Ibuprofen in piroxicam."
10:26
You have two medications you didn't try out yet.
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2251
In potem, "Imate še dve zdravili, s katerimi niste poskusili. Kaj boste storili?
10:28
What do you do? You let him go, or you pull him back?
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2643
Pustite pacienta, da mu zamenjajo kolk ali odpoveste zamenjavo?
10:31
And if you pull him back, do you try ibuprofen or piroxicam? Which one?"
239
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3444
In če odpoveste, poskusite z ibuprofenom ali piroxicamom? S katerim?"
10:34
Now, think of it:
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1156
Sedaj pa pomislite. Odločitev,
10:35
This decision makes it as easy to let the patient continue with hip replacement,
241
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3872
da pacientu zamenjajo kolk, je preprosta.
10:39
but pulling him back, all of the sudden it becomes more complex.
242
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3126
Ampak odločitev o odpovedi, kar naekrat postane kompleksna.
10:42
There is one more decision.
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1818
Ker je potem še ena odločitev.
10:44
What happens now?
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1326
Kaj se zgodi v tem primeru?
10:45
The majority of the physicians now choose to let the patient go
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3619
Večina zdravnikov pusti pacienta,
10:49
for a hip replacement.
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1517
da mu zamenjajo kolk.
10:51
I hope this worries you, by the way --
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2045
Upam, da vas skrbi --
10:53
(Laughter)
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653160
1233
(smeh)
10:54
when you go to see your physician.
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654417
1719
ko boste naslednjič pri zdravniku.
10:56
The thing is that no physician would ever say,
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2722
Stvar je v tem, da noben zdravnik ne bi izbiral
10:59
"Piroxicam, ibuprofen, hip replacement. Let's go for hip replacement."
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3793
"Piroxicam ali ibuprofen ali zamenjava kolka?
In izbral zamenjavo kolka.
11:03
But the moment you set this as the default,
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2791
Ampak, ko postane to privzeto stanje,
11:06
it has a huge power over whatever people end up doing.
253
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3976
ima ogromen vpliv na to, kako se bodo ljudje odločili.
11:10
I'll give you a couple of more examples on irrational decision-making.
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3334
Navedel vam bom še nekaj primerov neracionalnega odločanja.
11:13
Imagine I give you a choice:
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673518
1818
Predstavljajte si, da vam dam na izbiro:
11:15
Do you want to go for a weekend to Rome, all expenses paid --
256
675360
3613
Bi šli za vikend v Rim?
Vse všteto v ceni,
11:18
hotel, transportation, food, a continental breakfast, everything --
257
678997
4562
hotel, prevoz, hrana, zajtrk.
čisto vse.
11:23
or a weekend in Paris?
258
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1553
Ali vikend v Parizu?
11:25
Now, weekend in Paris, weekend in Rome -- these are different things.
259
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3254
Vikend v Parizu in vikend v Rimu sta dve različni zadevi.
11:28
They have different food, different culture, different art.
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2778
Drugačna hrana, drugačna kultura, drugačna umetnost.
Sedaj pa si predstavljajte, da dodam k izbiri še nekaj,
11:31
Imagine I added a choice to the set that nobody wanted.
261
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3356
česar si ne bi nihče želel.
11:34
Imagine I said, "A weekend in Rome,
262
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1752
Recimo, "Vikend v Rimu,
11:36
a weekend in Paris,
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1368
vikend v Parizu, ali pa da vam ukradejo avto?"
11:37
or having your car stolen?"
264
697788
1592
11:39
(Laughter)
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699404
3033
(smeh)
11:42
It's a funny idea, because why would having your car stolen,
266
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3246
Zabavna ideja. Zakaj bi to, da vam ukradejo avto,
11:45
in this set, influence anything?
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1596
kakorkoli vplivalo na odločitev?
11:47
(Laughter)
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707351
2114
(smeh)
11:49
But what if the option to have your car stolen was not exactly like this?
269
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4449
Kaj pa če ta izbira kraje
ne bi bila točno taka.
11:53
What if it was a trip to Rome, all expenses paid,
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2532
Kaj če bi izbirali med Rimom, z vsem plačanim,
11:56
transportation, breakfast,
271
716518
2278
prevoz, zajtrk ...
11:58
but it doesn't include coffee in the morning?
272
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2316
Ampak brez jutranje kave.
12:01
If you want coffee, you have to pay for it yourself, it's two euros 50.
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3373
Če hočete kavo, jo morate plačati sami. Dva evra in pol.
12:04
(Laughter)
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1007
Na nek način,
12:05
Now in some ways,
275
725588
1548
12:07
given that you can have Rome with coffee,
276
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2299
ker imate tudi izbiro z Rimom s kavo,
12:09
why would you possibly want Rome without coffee?
277
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2381
zakaj bi kdo izbral Rim brez kave?
12:11
It's like having your car stolen. It's an inferior option.
278
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2944
Kot izbira o ropu avtomobila. Slabša izbira.
12:15
But guess what happened?
279
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1152
Uganite kaj se zgodi. V trenutku ko dodamo Rim brez kave,
12:16
The moment you add Rome without coffee,
280
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2311
postane Rim s kavo najbolj popularen.
12:18
Rome with coffee becomes more popular, and people choose it.
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3618
12:22
The fact that you have Rome without coffee
282
742627
2509
Rim brez kave
12:25
makes Rome with coffee look superior,
283
745160
1976
naredi Rim s kavo za superiorno izbiro.
12:27
and not just to Rome without coffee -- even superior to Paris.
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2976
In ne samo v primerjavi z Rimo brez kave, tudi v primerjavi s Parizom.
12:30
(Laughter)
285
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4077
(smeh)
12:34
Here are two examples of this principle.
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754261
2452
Še dva primera tega principa.
12:36
This was an ad in The Economist a few years ago
287
756737
2652
To je oglas iz revije The Economist iz pred nekaj let,
12:39
that gave us three choices:
288
759413
2080
na katerem so tri izbire.
12:41
an online subscription for 59 dollars,
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2833
Naročnina na spletne vsebine za 59 dolarjev.
12:44
a print subscription for 125 dollars,
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3485
Naročnina na tiskano izdajo za 125.
12:47
or you could get both for 125.
291
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2253
Ali oboje za 125.
12:50
(Laughter)
292
770160
1976
(smeh)
12:52
Now I looked at this, and I called up The Economist,
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2585
Ko sem videl ta oglas, sem poklical na The Economist.
12:54
and I tried to figure out what they were thinking.
294
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2563
Poskušal sem ugotoviti, kaj so s tem mislili.
12:57
And they passed me from one person to another to another,
295
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3142
Pošiljali so me od ene osebe do druge itd.
13:00
until eventually I got to the person who was in charge of the website,
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3723
Dokler nisem dobil osebe zadolžene za spletno stran.
13:04
and I called them up, and they went to check what was going on.
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3595
Poklical sem jih in takoj so preverili kaj se dogaja.
13:07
The next thing I know, the ad is gone, no explanation.
298
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3847
Kar naenkrat oglas izgine. Brez razlage.
13:11
So I decided to do the experiment
299
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1887
Zato sem sam naredil eksperiment,
13:13
that I would have loved The Economist to do with me.
300
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2642
za katerega sem upal, da ga bo The Economist naredil skupaj z mano.
13:16
I took this and I gave it to 100 MIT students.
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2399
Vzel sem ta oglas in ga dal stotim MIT študentom.
13:18
I said, "What would you choose?"
302
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1564
Rekel sem, "Kaj bi izbrali?"
13:20
These are the market shares -- most people wanted the combo deal.
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3986
Takšen je bil rezultat. Večina jih je hotela kombinacijo spletne in tiskane izdaje.
13:24
Thankfully, nobody wanted the dominant option.
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2208
Na srečo nihče ni hotel samo tiskane izdaje.
13:26
That means our students can read.
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1640
To pomeni, da naši študentje znajo brati.
13:28
(Laughter)
306
808253
1382
(smeh)
13:29
But now, if you have an option that nobody wants,
307
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2889
Ampak, če imaš na izbiro opcijo, ki je nihče noče,
13:32
you can take it off, right?
308
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1699
jo lahko odstraniš. Ne?
13:34
So I printed another version of this,
309
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1841
Zato sem natisnil še eno verzijo,
13:36
where I eliminated the middle option.
310
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1817
kjer sem odstranil vmesno izbiro.
13:38
I gave it to another 100 students. Here is what happened:
311
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3483
Oglas sem razdelil med drugih sto študentov. In zgodilo se je to.
13:41
Now the most popular option became the least popular,
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2737
Sedaj je bolj popularna izbira postala prej manj popularna izbira.
13:44
and the least popular became the most popular.
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2643
In najmanj popularno je postalo najbolj popularno.
13:47
What was happening was the option that was useless,
314
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3335
Izbira, ki je bila neuporabna,
13:51
in the middle, was useless in the sense that nobody wanted it.
315
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3851
na sredini, je bila neuporabna v smislu, da je nihče ni hotel.
13:55
But it wasn't useless in the sense that it helped people figure out
316
835035
3166
Ampak ni bila neuporabna v smislu, da je pomagala ljudem ugotoviti,
kaj hočejo.
13:58
what they wanted.
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1151
13:59
In fact, relative to the option in the middle,
318
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2736
Relativno na srednjo izbiro,
14:02
which was get only the print for 125,
319
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4499
ki je samo tiskana izdaja za 125,
14:06
the print and web for 125 looked like a fantastic deal.
320
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3753
je izbira s tiskano in spletno izdajo za 125 zgledala kot odličen posel.
14:10
And as a consequence, people chose it.
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2103
In zato so ljudje izbirali to.
14:12
The general idea here, by the way,
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1627
Osnovna ideja tukaj je,
14:14
is that we actually don't know our preferences that well.
323
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2691
da ljudje ne poznamo svojih prefernec zelo dobro.
14:16
And because we don't know our preferences that well,
324
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2470
In ravno zato
smo dovzetni za vse te vplive zunanjih sil.
14:19
we're susceptible to all of these influences from the external forces:
325
859447
3289
14:22
the defaults, the particular options that are presented to us, and so on.
326
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3676
Privzete stvari, določene izbire, ki so nam predstavljene ipd.
14:26
One more example of this.
327
866792
1344
Še en primer tega.
14:28
People believe that when we deal with physical attraction,
328
868160
3357
Ljudje verjamemo, da pri fizični privlačnosti
14:31
we see somebody, and we know immediately whether we like them or not,
329
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3263
ko vidimo nekoga, vemo takoj, če nam je všeč ali ne.
14:34
if we're attracted or not.
330
874828
1308
Nas privlači ali ne.
14:36
This is why we have these four-minute dates.
331
876160
2432
Zato obstajajo štiriminutni zmenki.
14:38
So I decided to do this experiment with people.
332
878616
2520
Odločil sem se za ta eksperiment z ljudmi.
14:41
I'll show you images here, no real people, but the experiment was with people.
333
881160
3976
Pokazal vam bom slike ljudi. Ne pravih ljudi.
Ekperiment je bil z ljudmi.
14:45
I showed some people a picture of Tom, and a picture of Jerry.
334
885160
2976
Pokazal sem jim sliko Toma in sliko Jerrya.
14:48
and I said, "Who do you want to date?
335
888160
2069
Vprašal sem "S katerim bi šli na zmenek? Tom ali Jerry?"
14:50
Tom or Jerry?"
336
890253
1475
14:51
But for half the people, I added an ugly version of Jerry.
337
891752
3279
Vendar polovici ljudi sem dodal grdo verzijo Jerrya.
14:55
I took Photoshop and I made Jerry slightly less attractive.
338
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5081
S Photoshopom sem naredil Jerrya malo manj privlačnega.
15:00
(Laughter)
339
900160
1413
(smeh)
15:01
For the other people, I added an ugly version of Tom.
340
901597
3539
Ostalim pa sme dodal gršo verzijo Toma.
15:05
And the question was, will ugly Jerry and ugly Tom
341
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In vprašanje je bilo, če bosta grdi Jerry ali grdi Tom
15:08
help their respective, more attractive brothers?
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pomagala svojima bolj privlačnima bratoma?
15:11
The answer was absolutely yes.
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In odgovor je absolutno da.
15:14
When ugly Jerry was around, Jerry was popular.
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Ko je bil vmes grdi Jerry, je bil navadni Jerry zelo popularen.
15:16
When ugly Tom was around, Tom was popular.
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Ko je bil vmes grdi Tom, je bil navadni Tom popularen.
15:18
(Laughter)
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(smeh)
15:20
This of course has two very clear implications
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To ima seveda zelo pomembne posledice
15:22
for life in general.
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za življenje na splošno.
15:25
If you ever go bar-hopping, who do you want to take with you?
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Če greste kdaj zvečer ven, veste koga vzeti s seboj?
15:29
(Laughter)
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(smeh)
15:34
You want a slightly uglier version of yourself.
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S seboj hočete malenkost gršo verzijo sebe.
15:38
(Laughter)
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(smeh)
15:40
Similar, but slightly uglier.
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Podobno. Podobno, vendar malenkost gršo.
15:42
(Laughter)
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(smeh)
15:43
The second point, or course, is that if somebody invites you to bar hop,
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Druga ugotovitev pa je, seveda,
če vas kdo povabi ven, veste kaj si misli o vas.
15:47
you know what they think about you.
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15:49
(Laughter)
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(smeh)
15:52
Now you get it.
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Sedaj razumete.
15:54
What is the general point?
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Kaj je splošna ugotovitev?
15:56
The general point is that,
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Splošna ugotovitev je, da ko razmišljamo o ekonomiji,
15:57
when we think about economics, we have this beautiful view of human nature.
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si zamišljamo čudovit pogled na človeško naravo.
16:01
"What a piece of work is a man! How noble in reason!"
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"Kako poseben je človek! S plemenitimi razlogi!"
16:03
We have this view of ourselves, of others.
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Tak pogled imamo nase, na druge.
16:06
The behavioral economics perspective is slightly less "generous" to people;
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Iz vedenjsko ekonomske perspektive
pa je človek malenkost manj radodaren do ljudi.
16:11
in fact, in medical terms,
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To je naš pogled.
16:13
that's our view.
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16:14
(Laughter)
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(smeh)
16:20
But there is a silver lining.
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Ampak obstaja tudi svetla stran.
16:22
The silver lining is, I think,
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Zdi se mi, da je svetla stran tega to,
16:24
kind of the reason that behavioral economics is interesting and exciting.
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da je zaradi tega vedenjska ekonomija zanimiva in razburljiva.
16:28
Are we Superman, or are we Homer Simpson?
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Smo Superman? Ali pa smo Homer Simpson?
Pri ustvarjanju v fizičnem svetu,
16:31
When it comes to building the physical world,
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16:34
we kind of understand our limitations.
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razumemo svoje meje.
16:36
We build steps.
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Gradimo stopnice. In gradimo stvari,
16:37
And we build these things that not everybody can use, obviously.
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ki jih ne more vsakdo uporabljati.
16:40
(Laughter)
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(smeh)
16:42
We understand our limitations,
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Zavedamo se svojih omejitev.
16:44
and we build around them.
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In gradimo okrog njih.
16:46
But for some reason, when it comes to the mental world,
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A ko gre za miselni svet,
16:48
when we design things like healthcare and retirement and stock markets,
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ko snujemo stvari, kot so zdravstveni sistemi in pokojnine in borze,
16:52
we somehow forget the idea that we are limited.
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vedno pozabimo na dejstvo, da imamo tudi psihološke meje.
16:54
I think that if we understood our cognitive limitations
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Menim da, če bi poznali svoje kognitivne omejitve,
16:57
in the same way we understand our physical limitations,
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na enak način kot poznamo svoje fizične omejitve,
16:59
even though they don't stare us in the face the same way,
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čeprav kognitivne niso tako očitne,
bi lahko naredili svet boljši.
17:02
we could design a better world, and that, I think,
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In mislim, da obstaja upanje za to.
17:05
is the hope of this thing.
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17:06
Thank you very much.
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Hvala.
17:08
(Applause)
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(aplavz)
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