How do you know you’re not dreaming? - Daniel Gregory

505,654 views ・ 2022-03-22

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Milenka Okuka Lektor: Ivana Korom
00:06
You’re a butterfly, fluttering around pursuing a butterfly’s whims.
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Leptir ste koji leprša naokolo prateći svoje leptirske hirove.
00:11
Then you wake up.
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Onda se probudite.
00:13
But how do you know you’re not dreaming now?
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Međutim, kako znate da trenutno ne sanjate?
00:15
The answer might seem obvious,
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Odgovor se može učiniti očiglednim,
00:17
but it’s actually very difficult to explain how, definitively,
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ali je zapravo veoma teško objasniti kako, definitivno,
00:21
you know you’re awake.
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da znate da ste budni.
00:23
So difficult, in fact, that it has puzzled philosophers since ancient times.
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Toliko teško, zapravo, da je zbunjivalo filozofe još od drevnih vremena.
00:28
In the butterfly scenario,
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U scenariju sa leptirom,
00:30
the ancient Chinese philosopher Zhuangzi surfaced a mystifying possibility:
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drevni kineski filozof Čuang Ce je osvetlio zbunjujuću mogućnost:
00:35
if we can dream of being an entirely different creature,
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ako možemo da sanjamo da smo skroz drugačije biće,
00:38
who's to say we're not actually
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ko kaže da zapravo nismo
00:40
a different creature dreaming of being human?
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drugačije biće koje sanja da je čovek?
00:43
Bizarre things happen in dreams:
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Bizarne stvari se dešavaju u snovima:
00:45
you fly, or conjure an all-you-can-eat dessert buffet out of thin air,
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letite, ni iz čega stvarate švedski sto sa onoliko đakonija koliko vam duša ište,
00:49
or get chased by witches through the halls of your elementary school,
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ili vas jure veštice kroz hodnik vaše osnovne škole,
00:52
which suddenly looks a lot like Paris.
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koja iznenada poprilično liči na Pariz.
00:55
But the strange things that happen in dreams don’t seem strange at the time.
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Međutim, čudne stvari koje se dešavaju u snovima ne čine se čudnim dok sanjate.
00:59
So how do you know you’re not in a dream right now
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Pa, kako znate da trenutno niste u snu
01:02
that will seem very strange after you wake up?
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koji će se činiti krajnje čudnim nakon što se probudite?
01:05
Well, it is possible to notice
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Pa, moguće je zapaziti
01:07
the strangeness of a dream while you’re dreaming.
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neobičnost sna dok sanjate.
01:10
Lucid dreamers know they’re dreaming.
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Lucidni sanjari znaju da sanjaju.
01:12
By definition, if you were having a lucid dream, you would know it.
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Prema definiciji, da sanjate lucidan san, znali biste.
01:15
But all that proves is that you’re not having a lucid dream—
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Međutim, to samo dokazuje da ne sanjate lucidan san -
01:19
it doesn’t prove you’re awake.
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ne dokazuje da ste budni.
01:22
There has to be a surefire test—
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Mora da postoji pouzdan test -
01:24
something that never— or only— happens when you’re awake,
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nešto što se nikad - ili samo - dešava kada ste budni,
01:28
something that never— or only— happens in a dream.
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nešto što se nikad - ili samo - dešava u snu.
01:31
Wake up. No, that isn’t it—
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Probudite se. Ne, to nije to -
01:33
you can wake up in a dream.
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možete da se probudite u snu.
01:35
Pinch yourself. If it hurts, aren’t you really awake?
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Uštinite se. Ako boli, niste li uistinu budni?
01:38
Try to read or write something.
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Probajte da pročitate ili napišete nešto.
01:40
Run around the room.
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Trčite po sobi.
01:41
Does your pace seem normal or suspiciously slow?
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Da li vaš korak izgleda normalno ili je sumnjivo spor?
01:45
Suspiciously fast?
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Sumnjivo brz?
01:47
Can’t tell? Try to remember the last time you ran.
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Niste sigurni? Prisetite se poslednjeg puta kad ste trčali.
01:51
Actually, that brings us to an even better test
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Zapravo, to nas dovodi do još boljeg testa
01:54
from the 17th century French philosopher René Descartes.
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francuskog filozofa iz XVII veka Renea Dekarta.
01:58
He pointed out that in our memories, dreams are disconnected—
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Ukazao je da su u našem sećanju snovi nepovezani -
02:02
the events of a dream don’t fit in to the chain of events
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događaji u snovima se ne podudaraju sa nizom događaja
02:05
in our waking lives.
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iz naših budnih života.
02:07
This seems rock solid, doesn't it?
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Ovo se čini jasnim kao dan, zar ne?
02:09
You couldn’t possibly have swum with dolphins in a nameless pink sea
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Nema šanse da ste plivali sa delfinima u bezimenom rozom moru
02:13
between Christmas and New Year’s Eve
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između Božića i Nove godine
02:15
because you didn’t leave Kansas and you have the receipts to prove it.
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jer niste napustili Kanzas, a imate i račune da to dokažete.
02:19
Well, one of Descartes’ contemporaries,
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Pa, jedan od Dekartovih savremenika,
02:21
the English philosopher Thomas Hobbes, had something to say about that:
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engleski filozof Tomas Hobs je imao ponešto da kaže o ovome:
02:26
what if Descartes was performing his test in a dream?
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šta ako je Dekart izvodio svoj test u snu?
02:29
What if we ask an expert?
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Šta ako upitamo stručnjaka?
02:31
A neuroscientist can measure the activity in different parts of your brain
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Neuronaučnik može da meri aktivnost u različitim delovima vašeg mozga
02:35
and tell you whether you’re awake or sleeping.
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i da vam kaže da li ste budni ili spavate.
02:37
But that just brings us back to the idea that any test you might use
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To nas pak vraća na zamisao da koji god test da koristite
02:41
to prove you’re awake could take place in a dream.
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da biste dokazali da ste budni mogao bi da se dešava u snu.
02:45
So far, no one has found a convincing response to this.
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Do sad, niko nije pronašao uverljiv odgovor na ovo.
02:48
But let’s be real: there’s a whole lot more detail in our waking experience
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Uozbiljimo se ipak: ima mnogo više detalja u našim budnim iskustvima
02:53
than in dreams.
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nego u snovima.
02:54
We go to sleep and wake up again day after day for many years,
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Odlazimo na spavanje i ponovo se budimo dan za danom dugi niz godina,
02:58
and each new day is full of countless people, places, things, experiences.
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a svaki novi dan je ispunjen sa bezbroj ljudi, lica, stvari, iskustava.
03:03
Even our memories, which capture just a fraction of this experience,
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Čak i naša sećanja, koja beleže svega delić ovog iskustva,
03:07
contain an almost incomprehensibly vast amount of detail:
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sadrže gotovo nepojmljivo ogromnu količinu detalja:
03:11
we can recall a line from a favorite book decades later,
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možemo da se setimo rečenice iz omiljene knjige decenijama kasnije,
03:15
remember the musty smell of its pages
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sećamo se plesnivog mirisa njenih stranica
03:17
and the taste of the lemonade we drank while reading it,
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kao i ukusa limunade koju smo pili dok smo čitali knjigu,
03:20
remember a dream we had about it and tell someone all this.
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sećamo se sna koji smo sanjali o njoj i kako smo sve to nekom ispričali.
03:24
Isn't it ridiculous to suggest a dream could ever simulate this richness?
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Zar nije smešno pretpostaviti da san uopšte može da simulira ovo izobilje?
03:30
Well, as the Persian philosopher al-Ghazali pointed out,
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Pa, kao što je persijski filozof El Gazali istakao,
03:33
in the same way we think we are now awake having woken from dreams,
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isto kao što sad mislimo da smo budni probudivši se iz snova,
03:38
it is possible that we might wake from our current state
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moguće je da ćemo se probuditi iz našeg trenutnog stanja
03:41
into another state of even greater wakefulness.
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u drugo stanje još veće budnosti.
03:45
Which would mean we’re really in a kind of dream-state
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A to bi značilo da smo zaista u nekakvom stanju snoviđenja
03:47
when we think we’re awake.
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kada mislimo da smo budni.
03:49
What philosophers really want to know is what justifies our belief
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Filozofi zaista žele da znaju šta opravdava naše uverenje
03:54
that we’re awake.
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da smo budni.
03:55
We all want to believe things because we have reasons for them,
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Svi želimo da verujemo u nešto jer postoji razlog za to,
03:58
not just because they seem right.
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ne samo zato što se čini ispravnim.
04:01
Sometimes, the biggest challenge is to show why we should believe something
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Ponekad je najveći izazov pokazati zašto bi trebalo da verujemo u nešto
04:05
that seems completely obvious to us all.
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što se čini potpuno očiglednim svima nama.
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