How much does a video weigh? - Michael Stevens of Vsauce

624,870 views ใƒป 2013-04-24

TED-Ed


ืื ื ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ืœืžื˜ื” ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ.

ืชืจื’ื•ื: Ido Dekkers ืขืจื™ื›ื”: Boaz Hovav
00:14
Bean bags are awesome.
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ืคื•ืคื™ื ื”ื ืžื’ื ื™ื‘ื™ื.
ืื‘ืœ ืื ื™ ืจื•ืื” ื›ืžื” ืื ืฉื™ื ืฉื
00:19
But I see a few people out there who are standing,
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ืฉืขื•ืžื“ื™ื,
00:23
we've got some over here,
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ื™ืฉ ืœื ื• ื›ืžื” ืฉื,
00:24
and standing takes more work than lounging.
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ื•ืขืžื™ื“ื” ืœื•ืงื—ืช ื™ื•ืชืจ ืื ืจื’ื™ื” ืžื™ืฉื™ื‘ื”.
00:29
Using the Live Strong Organization's online database
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ืขืœ ื™ื“ื™ ืฉื™ืžื•ืฉ ื‘ืžืื’ืจ ื”ืžื™ื“ืข ืฉืœ ืืจื’ื•ืŸ ืœื™ื‘ ืกื˜ืจื•ื ื’
00:32
of weight loss resources,
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ืฉืœ ืžืฉืื‘ื™ ื™ืจื™ื“ื” ื‘ืžืฉืงืœ,
00:35
you can calculate
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ืืชื ื™ื›ื•ืœื™ื ืœื—ืฉื‘
00:36
that by the time I'm done with this speech,
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ืฉืขื“ ืฉืื ื™ ืืกื™ื™ื ืขื ื”ื ืื•ื ื”ื–ื”,
00:38
those of you who are standing
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ืืœื” ืžื›ื ืฉืขื•ืžื“ื™ื
00:40
will have burned 7.5 more calories
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ื™ืฉืจืคื• 7.5 ืงืœื•ืจื™ื•ืช ื™ื•ืชืจ
00:44
than those of you who are bean-bagging it.
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ืžืืœื” ืฉื™ื•ืฉื‘ื™ื ืขืœ ื”ืคื•ืคื™ื.
00:47
(Laughter)
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00:48
Okay, here's a question,
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ืื•ืงื™ื™, ื”ื ื” ืฉืืœื”,
00:50
speaking of weight loss, specifically weight,
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ืื ืžื“ื‘ืจื™ื ืขืœ ืื™ื‘ื•ื“ ืžืฉืงืœ, ื‘ืขื™ืงืจ ืžืฉืงืœ,
00:53
this speech is live.
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ื”ื ืื•ื ื”ื–ื” ื”ื•ื ืžืฉื•ื“ืจ ื—ื™.
00:54
I'm actually here in front of you guys,
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ืื ื™ ืœืžืขืฉื” ื›ืืŸ ืœืคื ื™ื›ื ื—ื‘ืจื”,
00:56
we're all here together.
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ื›ื•ืœื ื• ื›ืืŸ ื™ื—ื“.
00:57
But this speech is being recorded
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ืื‘ืœ ื”ื ืื•ื ื”ื–ื” ืžื•ืงืœื˜
00:59
and it will become a video that people can access all over the world
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ื•ื”ื•ื ื™ื”ืคื•ืš ืœืกืจื˜ื•ืŸ
ืฉืื ืฉื™ื ื™ื•ื›ืœื• ืœื’ืฉืช ืืœื™ื• ืžื›ืœ ืจื—ื‘ื™ ื”ืขื•ืœื
01:03
on computers, mobile devices,
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ืžืžื—ืฉื‘ื™ื,
ืžื›ืฉื™ืจื™ื ื ื™ื™ื“ื™ื,
01:05
televisions.
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ื˜ืœื•ื•ื™ื–ื™ื•ืช.
01:06
I weight about 190 pounds.
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ืื ื™ ืฉื•ืงืœ ื‘ืขืจืš 86 ืงื™ืœื•.
01:11
How much will the video weigh?
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ื›ืžื” ื”ืกืจื˜ื•ืŸ ื™ืฉืงื•ืœ?
01:18
Asking questions like that
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ืฉืืœืช ืฉืืœื” ื›ื–ื•
ื–ื” ืžื” ืฉืื ื—ื ื• ืขื•ืฉื™ื ื›ืœ ืฉื‘ื•ืข ื‘ืขืจื•ืฅ ืฉืœื™ Vsauce.
01:20
is what I do every week on my channel Vsauce.
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ื‘ืžืฉืš ื”ืฉื ืชื™ื™ื ื”ืื—ืจื•ื ื•ืช,
01:23
For the last two years,
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01:24
I have been asking really fun questions,
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ืื ื™ ืฉืืœืชื™ ืฉืืœื•ืช ืžืžืฉ ืžื’ื ื™ื‘ื•ืช,
01:26
mind-boggling questions,
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ืฉืืœื•ืช ืฉืžืฉื’ืขื•ืช ืืช ื”ืžื•ื—,
01:28
and approaching them as sincerely as I can,
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ื•ื ื™ื’ืฉ ืืœื™ื”ืŸ
ื‘ืื•ืคืŸ ื”ื›ื™ ื›ื ื” ืฉืื ื™ ื™ื›ื•ืœ,
01:31
celebrating scientific concepts and scientists.
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ื›ืฉืื ื™ ื ืขื–ืจ ื‘ืขืงืจื•ื ื•ืช ืžื“ืขื™ื™ื ื•ืžื“ืขื ื™ื ื ืคืœืื™ื.
01:34
And I research and write
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ื•ืื ื™ ื—ื•ืงืจ
ื•ื›ื•ืชื‘
01:36
and produce and host
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ื•ืžืคื™ืง
01:37
and edit and upload
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ื•ืžืืจื—
ื•ืขื•ืจืš
ื•ืžืขืœื”
01:38
and run the social media all by myself,
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ื•ืžืคืขื™ืœ ืืช ื”ืžื“ื™ื” ื”ื—ื‘ืจืชื™ืช ื”ื›ืœ ื‘ืขืฆืžื™,
01:40
but it's not lonely,
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ืื‘ืœ ืื ื™ ืœื ื‘ื•ื“ื“
01:42
because Vsauce has more than 2 million subscribers,
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ืžืคื ื™ ืฉืœ Vsauce ื™ืฉ ื™ื•ืชืจ ืžืฉื ื™ ืžืœื™ื•ืŸ ืžื ื•ื™ื™ื,
01:45
and every month, my videos are seen by more than 20 million people.
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ื•ื›ืœ ื—ื•ื“ืฉ, ื”ืกืจื˜ื•ื ื™ื ืฉืœื™ ื ืฆืคื™ื
ืขืœ ื™ื“ื™ ื™ื•ืชืจ ืž- 20 ืžืœื™ื•ืŸ ืื ืฉื™ื.
01:50
Yeah.
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ื›ืŸ.
01:52
(Applause)
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01:54
It's very exciting.
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ื–ื” ืžืื•ื“ ืžืจื’ืฉ.
01:55
I've found that asking a strange question is a great way to get people in,
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ืื ื™ ืžืฆืืชื™ ืฉืœืฉืื•ืœ ืฉืืœื•ืช ืžื•ื–ืจื•ืช
ื–ื” ื“ืจืš ืžืขื•ืœื” ืœืžืฉื•ืš ืื ืฉื™ื ืคื ื™ืžื”,
02:01
not just people, but fans.
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ืœื ืจืง ืื ืฉื™ื, ืืœื ืื•ื”ื“ื™ื,
02:03
And fans are different than just viewers or an audience,
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ื•ืื•ื”ื“ื™ื ืฉื•ื ื™ื ืžืกืชื ืฆื•ืคื™ื ืื• ืงื”ืœ
02:06
because fans want to come back.
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ืžืคื ื™ ืฉืื•ื”ื“ื™ื ืจื•ืฆื™ื ืœื—ื–ื•ืจ.
02:08
They subscribe to you on YouTube
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ื”ื ื ืจืฉืžื™ื ืœืขืจื•ืฅ ืฉืœื›ื ื‘ื™ื•ื˜ื™ื•ื‘
02:11
and they want to watch everything you've made
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ื•ื”ื ืจื•ืฆื™ื ืœืฆืคื•ืช ื‘ื›ืœ ืžื” ืฉืขืฉื™ืชื
02:13
and everything you plan to make in the future
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ื•ื›ืœ ืžื” ืฉืืชื ืžืชื›ื ื ื™ื ืœืขืฉื•ืช ื‘ืขืชื™ื“.
02:15
because we are curious people
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ืžืคื ื™ ืฉืื ื—ื ื• ืื ืฉื™ื ืกืงืจื ื™ื
02:18
and sparking curiosity is great bait.
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ื•ืœื”ืฆื™ืช ืกืงืจื ื•ืช ื–ื” ืคืชื™ื•ืŸ ืžืขื•ืœื”.
02:23
It's a great way to catch a human.
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ื–ื• ื“ืจืš ื ืคืœืื” ืœืชืคื•ืฉ ืื“ื.
02:26
And once you've caught them,
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ื•ื‘ืจื’ืข ืฉืชืคืฉืชื ืื•ืชื,
02:27
you have this captive audience that you can,
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ื™ืฉ ืœื›ื ืืช ื”ืงื”ืœ ื”ืฉื‘ื•ื™ ื”ื–ื” ืฉืืชื ื™ื›ื•ืœื™ื,
02:31
with the goal in mind of answering the question,
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ืžืชื•ืš ื›ื•ื•ื ื” ืœืขื ื•ืช ืขืœ ืฉืืœื•ืช,
02:33
accidentally teach a lot of things to.
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ื‘ืžืงืจื”, ืœืœืžื“ ื”ืจื‘ื” ื“ื‘ืจื™ื.
02:36
So, let's take a look at some of my videos.
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ืื–, ื‘ื•ืื• ื ื‘ื™ื˜ ื‘ื›ืžื” ืžื”ืกืจื˜ื•ื ื™ื.
02:39
Here are eight of them.
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ื”ื ื” ืฉืžื•ื ื” ืžื”ื.
02:41
But down here in the lower-right corner,
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ืื‘ืœ ืคื” ืœืžื˜ื” ื‘ืคื™ื ื” ื”ื™ืžื ื™ืช ื”ืชื—ืชื•ื ื”,
"ื‘ืื™ื–ื” ืฆื‘ืข ื”ืžึทืจืึธื”?"
02:43
"What Color is a Mirror?"
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02:45
When people see that,
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ื›ืฉืื ืฉื™ื ืจื•ืื™ื ืืช ื–ื”,
02:46
it's very difficult not to click, because you think,
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ื–ื” ืžืžืฉ ืงืฉื” ืœื ืœืœื—ื•ืฅ ืขืœ ื–ื”, ืžืคื ื™ ืฉืืชื ื—ื•ืฉื‘ื™ื,
02:49
"Come on, are you serious?
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"ื‘ืืžืช, ืืชื” ืจืฆื™ื ื™?
02:50
How could you possibly answer that question?"
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ืื™ืš ืืชื” ื‘ื›ืœืœ ื™ื›ื•ืœ ืœืขื ื•ืช ืขืœ ืฉืืœื” ื›ื–ืืช?"
02:53
Well, so far, 7.6 million people have watched
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ื•ื‘ื›ืŸ, ืขื“ ืขื›ืฉื™ื•, 7.6 ืžื™ืœื™ื•ืŸ ืื ืฉื™ื ืฆืคื•
02:58
this five-minute video about what color a mirror is.
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ื‘ืกืจื˜ื•ืŸ ื‘ืŸ ื”ื—ืžืฉ ื“ืงื•ืช ื”ื–ื” ืขืœ ืฆื‘ืข ื”ืžืจืื”.
03:00
And in that episode, I answer the question
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ื•ื‘ืคืจืง ื”ื–ื”, ืื ื™ ืขื•ื ื” ืขืœ ื”ืฉืืœื”
03:02
and I get a chance to explain what would normally be kind of dry topics:
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ื•ืžืงื‘ืœ ื”ื–ื“ืžื ื•ืช ืœื”ืกื‘ื™ืจ
ืžื” ืฉื”ื™ื” ื‘ืื•ืคืŸ ื ื•ืจืžืœื™ ืกื•ื’ ืฉืœ ื ื•ืฉื ื™ื‘ืฉ:
03:07
optics,
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ืื•ืคื˜ื™ืงื”,
ื”ื—ื–ืจ ืžืคื•ื–ืจ ืื• ืฉืœื,
03:08
diffuse versus specular reflection,
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03:10
how light works, how light works on the retina,
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ืื™ืš ืื•ืจ ืขื•ื‘ื“,
ืื™ืš ืื•ืจ ืขื•ื‘ื“ ืขืœ ื”ืจืฉืชื™ืช,
03:12
and even the etymology of color terms
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ื•ืืคื™ืœื• ืืช ืžืงื•ืจืŸ ืฉืœ ืžืœื™ื ื”ืžืชืืจื•ืช ืฆื‘ืข
03:14
like white and black.
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ื›ืžื• ืœื‘ืŸ ื•ืฉื—ื•ืจ.
03:17
Okay, spoiler alert:
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ืื•ืงื™ื™, ืื–ื”ืจืช ืกืคื•ื™ื™ืœืจ:
03:19
mirrors are not clear,
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ืžืจืื•ืช ื”ืŸ ืœื ืฉืงื•ืคื•ืช,
03:21
they are not silvery,
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ื”ืŸ ืœื ื›ืกื•ืคื•ืช
03:23
like they're often illustrated.
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ื›ืžื• ืฉืžืชืืจื™ื ืื•ืชื ื‘ื“ืจืš ื›ืœืœ.
03:24
Mirrors, technically speaking,
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ืžืจืื•ืช, ืžื‘ื—ื™ื ื” ื˜ื›ื ื™ืช,
03:26
are just a tiny, tiny, little bit ...
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ื”ืŸ ืจืง ืงืฆืช, ืžืžืฉ ืžืขื˜,
03:29
green.
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ื™ืจื•ืงื•ืช.
03:30
You can demonstrate this by putting two mirrors next to each other,
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ืืชื ื™ื›ื•ืœื™ื ืœื”ื“ื’ื™ื ืืช ื–ื”
ืขืœ ื™ื“ื™ ื–ื” ืฉืชืฉื™ืžื• ืฉืชื™ ืžืจืื•ืช ืื—ืช ืœื™ื“ ื”ืฉื ื™ื”,
03:33
facing so they reflect back and forth forever.
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ื›ืš ืฉื™ืฉืงืคื• ืื—ืช ืืช ื”ืฉื ื™ื”
ื•ืงื“ื™ืžื” ืื—ื•ืจื” ืœื ืฆื—.
ื”ื‘ื™ื˜ื• ื‘ืžื•ืจื“ ื”ื”ืฉืชืงืคื•ืช ื”ื ืฆื—ื™ืช ื”ื–ื•
03:36
Look down that infinite reflection, and it will get dimmer,
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ื•ื”ื™ื ืชื”ื™ื” ืขืžื•ืžื” ื™ื•ืชืจ
03:39
because some light is lost or absorbed every time,
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ืžืคื ื™ ืฉื—ืœืง ืžื”ืื•ืจ ืื•ื‘ื“ ืื• ื ืกืคื’ ื›ืœ ืคืขื,
03:42
but it will also become greener,
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ืื‘ืœ ื”ื™ื ื’ื ืชื”ื™ื” ื™ืจื•ืงื” ื™ื•ืชืจ
03:46
because green light,
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ืžืคื ื™ ืฉืื•ืจ ื™ืจื•ืง,
03:47
that is light of a wavelength that we perceive as green,
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ืฉื”ื•ื ืื•ืจ ืขื ืื•ืจืš ื’ืœ
ืฉืื ื—ื ื• ืงื•ืœื˜ื™ื ื›ื™ืจื•ืง,
03:50
is best reflected by most mirrors.
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ืžืฉืชืงืฃ ื”ื›ื™ ื˜ื•ื‘ ื‘ืจื•ื‘ ื”ืžืจืื•ืช.
03:54
Okay, so, how much does a video weigh?
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ืื•ืงื™ื™, ืื–, ื›ืžื” ืกืจื˜ื•ืŸ ืฉื•ืงืœ?
03:56
Well, when you stream a video onto your computer,
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ื•ื‘ื›ืŸ, ื›ืฉืืชื ืžืขื‘ื™ืจื™ื ืกืจื˜ื•ืŸ ืœืžื—ืฉื‘,
03:59
that information is temporarily stored
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ื”ืžื™ื“ืข ื”ื–ื” ืžืื•ื›ืกืŸ ื–ืžื ื™ืช
04:01
using electrons.
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ืขืœ ื™ื“ื™ ืืœืงื˜ืจื•ื ื™ื.
04:03
And the number of electrons on your device won't actually increase or decrease.
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ื•ืžืกืคืจ ื”ืืœืงื˜ืจื•ื ื™ื ื‘ืžื›ืฉื™ืจ ืฉืœื›ื
ืœื ื™ื’ื“ืœ ืื• ื™ืงื˜ืŸ ืœืžืขืฉื”.
04:08
But it takes energy to store them in one place,
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ืื‘ืœ ื–ื” ื“ื•ืจืฉ ืื ืจื’ื™ื” ื›ื“ื™ ืœืฉืžื•ืจ ืื•ืชื ื‘ืžืงื•ื ืื—ื“,
04:11
and, thanks to our friend Albert Einstein,
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ื•ืื ื—ื ื• ื™ื•ื“ืขื™ื,
ืชื•ื“ื•ืช ืœื—ื‘ืจื™ื ื• ืืœื‘ืจื˜ ืื™ื ืฉื˜ื™ื™ืŸ,
04:14
we know that energy and mass are related.
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ืฉืื ืจื’ื™ื” ื•ืžืกื” ืงืฉื•ืจื•ืช.
04:16
Okay, so here's the thing:
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ืื•ืงื™ื™, ืื– ื”ื ื” ื”ืขื ื™ื™ืŸ:
04:18
let's say you're watching a YouTube video
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ื‘ื•ืื• ื ื’ื™ื“ ืฉืืชื ืฆื•ืคื™ื ื‘ืกืจื˜ื•ืŸ ื™ื•ื˜ื™ื•ื‘
ื‘ืจื–ื•ืœื•ืฆื™ื” ืžืžืฉ ื™ืคื”, 720P.
04:20
at a really nice resolution, 720p.
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04:23
Assuming a typical bit rate,
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ืื ืžืชื—ืฉื‘ื™ื ื‘ื‘ื™ื˜ ืจื™ื™ื˜ ื˜ื™ืคื•ืกื™,
04:25
we can figure that a minute of YouTube video
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ืื ื—ื ื• ื™ื›ื•ืœื™ื ืœื—ืฉื‘ ืฉื“ืงื” ืฉืœ ืกืจื˜ื•ืŸ ื™ื•ื˜ื™ื•ื‘
ืชืขืจื‘
04:30
is going to need to involve about 10 million electrons on your device.
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ื‘ืขืจืš 10 ืžื™ืœื™ื•ืŸ ืืœืงื˜ืจื•ื ื™ื ื‘ืžื›ืฉื™ืจ ืฉืœื›ื.
ืื ืžื›ื ื™ืกื™ื ืืช ื›ืœ ื”ืืœืงื˜ืจื•ื ื™ื ื”ืืœื”
04:38
Plugging all those electrons and the energy it takes to hold them
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ื•ื”ืื ืจื’ื™ื” ืฉืœื•ืงื— ื›ื“ื™ ืœื”ื—ื–ื™ืง ืื•ืชื
04:41
in the correct place for you to see the video,
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ื‘ืžืงื•ื ื”ื ื›ื•ืŸ ื›ื“ื™ ืฉืชืจืื• ืืช ื”ืกืจื˜ื•ืŸ
ืœืชื•ืš ื”ื ื•ืกื—ื” ื”ื”ื™ื,
04:43
into that formula,
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ืื ื—ื ื• ื™ื›ื•ืœื™ื ืœื—ืฉื‘
04:44
we can figure out that one minute of YouTube video
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ืฉื“ืงื” ืื—ืช ืฉืœ ืกืจื˜ื•ืŸ ื™ื•ื˜ื™ื•ื‘
04:47
increases the mass of your computer
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ืžื’ื“ื™ืœื” ืืช ืžืืกืช ื”ืžื—ืฉื‘ ืฉืœื›ื
04:50
by about 10 to the negative 19th grams.
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ื‘ื‘ืขืจืš 10 ื‘ื—ื–ืงืช ืžื™ื ื•ืก 19 ื’ืจื.
04:55
Written out, it looks like this.
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ืื ืชื›ืชื‘ื• ืืช ื–ื”, ื–ื” ื™ืจืื” ื›ื›ื”.
04:57
(Whistle)
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04:58
That's like nothing.
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ื–ื” ื›ืžื• ื›ืœื•ื.
05:00
You could call that nothing, and you wouldn't really get in trouble,
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ื–ื”, ืืชื ื™ื›ื•ืœื™ื ืœืงืจื•ื ืœื–ื” ื›ืœื•ื
ื•ืœื ืชื›ื ืกื• ืœืฆืจื•ืช
ืžืคื ื™ ืฉื”ืžืฉืงืœื™ื ื”ื›ื™ ื˜ื•ื‘ื™ื ืฉืื™ ืคืขื ื”ื•ืžืฆืื•
05:04
because the best scales we've ever invented
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05:07
that we could try to use to actually to detect that change
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ืฉื ื•ื›ืœ ืœื ืกื•ืช ืœื”ืฉืชืžืฉ ื‘ื”ื
ื›ื“ื™ ืœื’ืœื•ืช ืืช ื”ืฉื™ื ื•ื™
05:10
are only accurate to 10 to the negative 9th grams.
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ืžื“ื•ื™ื™ืงื™ื ืขื“ ืœ 10 ื‘ื—ื–ืงืช ืžื™ื ื•ืก 9 ื’ืจื.
05:13
So, we can't measure it,
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ืื–, ืื ื—ื ื• ืœื ื™ื›ื•ืœื™ื ืœืžื“ื•ื“ ืืช ื–ื”,
05:15
but we can, like we just did, calculate it.
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ืื‘ืœ ืื ื—ื ื• ื™ื›ื•ืœื™ื, ื›ืžื• ืฉืขืฉื™ื ื•,
ืœื—ืฉื‘ ืืช ื–ื”.
05:17
And that's really cool because when I was a kid,
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ื•ื–ื” ื“ื™ ืžื’ื ื™ื‘
ืžืคื ื™ ืฉื›ืฉื”ื™ื™ืชื™ ื™ืœื“,
05:20
my school had two shelves of science books.
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ื‘ื‘ื™ืช ื”ืกืคืจ ืฉืœื™ ื”ื™ื• ืฉื ื™ ืžื“ืคื™ื ืฉืœ ืกืคืจื™ ืžื“ืข.
05:25
That was really cool,
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ื–ื” ื”ื™ื” ืžืžืฉ ืžื’ื ื™ื‘,
05:26
but I read all of them within, like, two grades,
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ืื‘ืœ ืงืจืืชื™ ืืช ื›ื•ืœื ืชื•ืš, ื‘ืขืจืš, ืฉื ืชื™ื™ื,
05:28
and it was hard to get more books
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ื•ื–ื” ื”ื™ื” ืงืฉื” ืœื”ืฉื™ื’ ืขื•ื“ ืกืคืจื™ื
ืžืคื ื™ ืฉืกืคืจื™ื ื”ื ื›ื‘ื“ื™ื
05:30
because books are heavy, you need space for them
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ื•ืืชื ืฆืจื™ื›ื™ื ืžืงื•ื ืœืื›ืกืŸ ืื•ืชื
05:33
and moving books around is tougher than what we can do today.
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ื•ืœื”ื–ื™ื– ืกืคืจื™ื ื–ื” ื”ืจื‘ื” ื™ื•ืชืจ ืงืฉื”
ืžืžื” ืฉืื ื—ื ื• ื™ื›ื•ืœื™ื ืœืขืฉื•ืช ื”ื™ื•ื.
05:35
With numbers that small,
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ืขื ืžืกืคืจื™ื ื›ืืœื” ืงื˜ื ื™ื,
05:37
I can fit thousands of books
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ืื ื™ ื™ื›ื•ืœื™ื ืœื”ื›ื ื™ืก ืืœืคื™ ืกืคืจื™ื
05:39
on my own little personal electronic reader.
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ืขืœ ืงื•ืจื ื”ืกืคืจื™ื ื”ื“ื™ื’ื™ื˜ืœื™ ื”ืงื˜ืŸ ืฉืœื™.
05:43
I can stream hours and hours
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ืื ื™ ื™ื›ื•ืœ ืœื”ืขื‘ื™ืจ ืฉืขื•ืช ืขืœ ื’ื‘ื™ ืฉืขื•ืช
05:45
and days and days of YouTube video
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ื•ื™ืžื™ื ืขืœ ื’ื‘ื™ ื™ืžื™ื ืฉืœ ืกืจื˜ื•ืŸ ื™ื•ื˜ื™ื•ื‘
05:47
without my computer ever getting measurably heavier.
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ื‘ืœื™ ืฉื”ืžื—ืฉื‘ ืฉืœื™ ื™ื”ื™ื” ื›ื‘ื“ ื‘ืื•ืคืŸ ืžื“ื™ื“.
ื•ื›ืฉืžื™ื“ืข ื ื”ืคืš ืœืงืœ ื™ื•ืชืจ,
05:52
And as information becomes that light,
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05:54
it becomes a lot more democratic,
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ื”ื•ื ื”ื•ืคืš ืœื”ืจื‘ื” ื™ื•ืชืจ ื“ืžื•ืงืจื˜ื™,
05:55
meaning that more teachers
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ืžื” ืฉืื•ืžืจ ืฉื™ื•ืชืจ ืžื•ืจื™ื
05:58
and presenters and creators and viewers than ever before
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ื•ืžืฆื™ื’ื™ื
ื•ื™ื•ืฆืจื™ื
ื•ืฆื•ืคื™ื ืžืื™ ืคืขื
06:03
can be involved.
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ื™ื›ื•ืœื™ื ืœื”ื™ื•ืช ืžืขื•ืจื‘ื™ื.
06:06
Right now, on YouTube,
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ืžืžืฉ ืขื›ืฉื™ื• ื‘ื™ื•ื˜ื™ื•ื‘
06:07
there is an explosion of content like this happening.
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ื™ืฉ ื’ื•ื“ืฉ ืฉืœ ืชื•ื›ืŸ
ื›ืžื• ื–ื” ืฉืงื•ืจื”.
06:10
The three Vsauce channels are down there in the corner.
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ืฉืœื•ืฉืช ืขืจื•ืฆื™ Vsauce
ื”ื ืฉื ืœืžื˜ื” ื‘ืชืžื•ื ื”.
06:13
But everyone else, all together, collectively,
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ืื‘ืœ ื›ืœ ื”ืื—ืจื™ื, ื›ื•ืœื ื™ื—ื“,
ื‘ืื•ืคืŸ ืงื•ืœืงื˜ื™ื‘ื™,
06:15
their views dwarf what I can do alone
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ื”ืฆืคื™ื•ืช ืฉืœื”ื ืžืชื’ืžื“ื•ืช ื™ื—ืกื™ืช ืœืžื” ืฉืื ื™ ื™ื›ื•ืœ ืœืขืฉื•ืช ืœื‘ื“
06:18
or with the people that I work with,
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ืื• ืขื ืื ืฉื™ื ืฉืื ื™ ืขื•ื‘ื“ ืื™ืชื,
06:20
and that is really, really exciting.
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ื•ื–ื” ืžืžืฉ, ืžืžืฉ ืžืจื’ืฉ.
06:22
It turns out that tapping into people's curiosity
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ืžืกืชื‘ืจ ืฉืœื”ืชื—ื‘ืจ ืœืกืงืจื ื•ืช ืฉืœ ืื ืฉื™ื
06:25
and responsibly answering their questions
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ื•ืœืขื ื•ืช ื‘ืื•ืคืŸ ืื—ืจืื™ ืขืœ ื”ืฉืืœื•ืช ืฉืœื”ื
06:28
is a brilliant way to build fans and an audience
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ื–ื” ื“ืจืš ื’ืื•ื ื™ืช ืœื‘ื ื•ืช ืื•ื”ื“ื™ื ื•ืงื”ืœ
06:32
and get in viewers.
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ื•ืœืงื‘ืœ ืฆื•ืคื™ื.
06:33
It's even a great way for brands and companies
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ื–ื• ืืคื™ืœื• ื“ืจืš ืžืขื•ืœื” ืœืžืชื’ ื—ื‘ืจื•ืช
06:36
to build trust.
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ื›ื“ื™ ืœื‘ื ื•ืช ืืžื•ืŸ.
06:38
So, calculating the weight of a video
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ืื–, ื—ื™ืฉื•ื‘ ืžืฉืงืœ ื”ืกืจื˜ื•ืŸ
06:43
is kind of a funny question,
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ื–ื” ืกื•ื’ ืฉืœ ืฉืืœื” ืžืฆื—ื™ืงื”,
06:45
but I cannot wait to see what we ask and answer next.
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ืื‘ืœ ืื ื™ ืœื ื™ื›ื•ืœ ืœื—ื›ื•ืช ืœืจืื•ืช
ืžื” ื ืฉืืœ ื•ื ืขื ื” ืื—ืจ ื›ืš.
06:51
As always, thanks for watching.
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ื›ืžื• ืชืžื™ื“, ืชื•ื“ื” ืฉืฆืคื™ืชื.
06:53
(Applause)
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ืขืœ ืืชืจ ื–ื”

ืืชืจ ื–ื” ื™ืฆื™ื’ ื‘ืคื ื™ื›ื ืกืจื˜ื•ื ื™ YouTube ื”ืžื•ืขื™ืœื™ื ืœืœื™ืžื•ื“ ืื ื’ืœื™ืช. ืชื•ื›ืœื• ืœืจืื•ืช ืฉื™ืขื•ืจื™ ืื ื’ืœื™ืช ื”ืžื•ืขื‘ืจื™ื ืขืœ ื™ื“ื™ ืžื•ืจื™ื ืžื”ืฉื•ืจื” ื”ืจืืฉื•ื ื” ืžืจื—ื‘ื™ ื”ืขื•ืœื. ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ื”ืžื•ืฆื’ื•ืช ื‘ื›ืœ ื“ืฃ ื•ื™ื“ืื• ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ ืžืฉื. ื”ื›ืชื•ื‘ื™ื•ืช ื’ื•ืœืœื•ืช ื‘ืกื ื›ืจื•ืŸ ืขื ื”ืคืขืœืช ื”ื•ื•ื™ื“ืื•. ืื ื™ืฉ ืœืš ื”ืขืจื•ืช ืื• ื‘ืงืฉื•ืช, ืื ื ืฆื•ืจ ืื™ืชื ื• ืงืฉืจ ื‘ืืžืฆืขื•ืช ื˜ื•ืคืก ื™ืฆื™ืจืช ืงืฉืจ ื–ื”.

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