WEBVTT 00:00:00.621 --> 00:00:03.015 So, this is a map of New York State 00:00:03.015 --> 00:00:06.417 that was made in 1937 by the General Drafting Company. 00:00:06.417 --> 00:00:09.767 It's an extremely famous map among cartography nerds, 00:00:09.767 --> 00:00:12.519 because down here at the bottom of the Catskill Mountains 00:00:12.519 --> 00:00:14.576 there is a little town called Roscoe 00:00:14.600 --> 00:00:17.500 - actually, this will go easier if I just put it up here - 00:00:19.626 --> 00:00:23.105 There's Roscoe, and then, right above Roscoe, is Rockland, New York, 00:00:23.105 --> 00:00:27.058 and then right above that is the tiny town of Agloe, New York. 00:00:27.058 --> 00:00:30.182 Agloe, New York, is very famous to cartographers, 00:00:30.182 --> 00:00:32.078 because it's a paper town. 00:00:32.078 --> 00:00:35.078 It's also known as a copyright trap. 00:00:35.078 --> 00:00:38.470 Because my map of New York and your map of New York 00:00:38.470 --> 00:00:41.714 are going to look very similar, on account of the shape of New York. 00:00:41.714 --> 00:00:46.355 Often, map makers will insert fake places onto their maps, 00:00:46.355 --> 00:00:48.969 in order to protect their copyright, because then, 00:00:48.969 --> 00:00:51.599 if my fake place shows up on your map, 00:00:51.599 --> 00:00:54.848 I can be well and truly sure that you have robbed me. 00:00:54.848 --> 00:01:00.110 Agloe is a scrabblization of the initials of the two guys who made this map 00:01:00.110 --> 00:01:03.007 Ernest G. Alpers and Otto Lindberg, 00:01:03.007 --> 00:01:05.477 and they released this map in 1937. 00:01:05.477 --> 00:01:09.464 Decades later, Rand McNally releases a map 00:01:09.464 --> 00:01:13.620 with Agloe, New York, on it, at the same exact intersection 00:01:13.620 --> 00:01:16.662 of two dirt roads in the middle of nowhere. 00:01:16.662 --> 00:01:20.126 Well, you can imagine the delight over at General Drafting. 00:01:20.126 --> 00:01:23.126 They immediately called Rand McNally, and they say, 00:01:23.126 --> 00:01:26.872 "We've caught you! We made Agloe, New York, up. 00:01:26.872 --> 00:01:29.036 It is a fake place. It's a paper town. 00:01:29.036 --> 00:01:31.226 We're going to sue your pants off!" 00:01:31.226 --> 00:01:35.856 And Rand McNally says, "No, no, no, no, Agloe is real." 00:01:37.113 --> 00:01:41.082 Because people kept going to that intersection of two dirt roads 00:01:41.082 --> 00:01:42.802 (Laughter) 00:01:42.819 --> 00:01:44.102 in the middle of nowhere, 00:01:44.102 --> 00:01:47.247 expecting there to be a place called Agloe, 00:01:47.643 --> 00:01:50.716 someone built a place called Agloe, New York. 00:01:51.798 --> 00:01:54.974 It had a gas station, a general store, two houses at its peak. 00:01:54.974 --> 00:01:57.244 (Laughter) 00:01:58.205 --> 00:02:02.595 And this is of course a completely irresistible metaphor to a novelist, 00:02:02.595 --> 00:02:07.293 because we would all like to believe that the stuff that we write down on paper 00:02:07.293 --> 00:02:10.157 can change the actual world in which we're actually living - 00:02:10.157 --> 00:02:12.596 which is why my third book is called "Paper Towns". 00:02:12.596 --> 00:02:16.493 But what interests me ultimately more than the medium in which this happened 00:02:16.493 --> 00:02:19.195 is the phenomenon itself. 00:02:20.256 --> 00:02:24.284 It's easy enough to say that the world shapes our maps of the world, right? 00:02:24.284 --> 00:02:28.546 Like the overall shape of the world is obviously going to affect our maps. 00:02:29.110 --> 00:02:32.339 But what I find a lot more interesting is the way 00:02:32.339 --> 00:02:35.880 that the manner in which we map the world changes the world. 00:02:36.369 --> 00:02:40.676 Because the world would truly be a different place if North were down. 00:02:40.676 --> 00:02:44.175 And the world would be a truly different place if Alaska and Russia 00:02:44.175 --> 00:02:46.461 weren't on opposite sides of the map. 00:02:46.461 --> 00:02:48.411 And the world would be a different place 00:02:48.411 --> 00:02:52.047 if we projected Europe to show it in its actual size. 00:02:52.659 --> 00:02:56.320 The world is changed by our maps of the world. 00:02:56.760 --> 00:03:01.390 The way that we choose to, sort of, our personal cartographic enterprise 00:03:01.717 --> 00:03:04.330 also shapes the map of our lives, 00:03:04.330 --> 00:03:06.780 and that in turn shapes our lives. 00:03:06.780 --> 00:03:11.088 I believe that what we map changes the life we lead. 00:03:11.670 --> 00:03:15.539 And I don't mean that in some, like, secrecy Oprah's Angels network, like, 00:03:15.539 --> 00:03:18.578 you-can-think-your-way-out -of-cancer sense. 00:03:18.578 --> 00:03:21.597 But I do believe that while maps don't show you 00:03:21.597 --> 00:03:24.597 where you will go in your life, 00:03:25.116 --> 00:03:27.168 they show you where you might go. 00:03:27.168 --> 00:03:31.743 You very rarely go to a place that isn't on your personal map. 00:03:32.016 --> 00:03:35.304 So I was a really terrible student when I was a kid. 00:03:35.304 --> 00:03:38.161 My GPA was consistently in the low 2s, 00:03:38.482 --> 00:03:41.267 and I think the reason that I was such a terrible student 00:03:41.267 --> 00:03:44.177 is that I felt like education was just a series of hurdles 00:03:44.177 --> 00:03:47.177 that had been erected before me, 00:03:47.177 --> 00:03:50.873 and I had to jump over in order to achieve adulthood. 00:03:50.873 --> 00:03:53.368 And I didn't really want to jump over these hurdles, 00:03:53.368 --> 00:03:56.333 because they seemed completely arbitrary, so I often wouldn't, 00:03:56.333 --> 00:03:58.474 and then people would threaten me, you know, 00:03:58.474 --> 00:04:01.467 they'd threaten me with "this going on my permanent record", 00:04:01.467 --> 00:04:03.363 or "you'll never get a good job". 00:04:03.363 --> 00:04:05.296 I didn't want a good job! 00:04:05.296 --> 00:04:08.112 As far as I could tell at eleven or twelve years old, like, 00:04:08.112 --> 00:04:11.296 people with good jobs woke up very early in the morning, 00:04:11.296 --> 00:04:13.022 (Laughter) 00:04:13.022 --> 00:04:17.211 and the men who had good jobs, one of the first things they did 00:04:17.211 --> 00:04:21.765 was tie a strangulation item of clothing around their necks. 00:04:22.301 --> 00:04:24.493 They literally put nooses on themselves, 00:04:24.493 --> 00:04:27.403 and then they went off to their jobs, whatever they were. 00:04:27.403 --> 00:04:30.226 That's not a recipe for a happy life. 00:04:30.226 --> 00:04:34.455 These people - in my, symbol-obsessed, twelve-year-old imagination, 00:04:34.455 --> 00:04:36.670 these people who are strangling themselves 00:04:36.670 --> 00:04:39.321 as one of the first things they do each morning, 00:04:39.321 --> 00:04:41.246 they can't possibly be happy. 00:04:41.246 --> 00:04:43.541 Why would I want to jump over all these hurdles 00:04:43.541 --> 00:04:45.801 and have that be the end? 00:04:45.801 --> 00:04:47.823 That's a terrible end! 00:04:47.823 --> 00:04:50.726 And then, when I was in tenth grade, I went to this school, 00:04:50.726 --> 00:04:53.758 Indian Springs School, a small boarding school, 00:04:53.758 --> 00:04:55.458 outside of Birmingham, Alabama, 00:04:55.458 --> 00:04:58.775 and all at once I became a learner. 00:04:58.952 --> 00:05:01.195 And I became a learner, because I found myself 00:05:01.195 --> 00:05:03.329 in a community of learners. 00:05:03.329 --> 00:05:05.728 I found myself surrounded by people 00:05:05.728 --> 00:05:08.728 who celebrated intellectualism and engagement, 00:05:08.728 --> 00:05:12.313 and who thought that my ironic oh-so-cool disengagement 00:05:12.313 --> 00:05:14.383 wasn't clever, or funny, 00:05:14.383 --> 00:05:17.757 but, like, it was a simple and unspectacular response 00:05:17.757 --> 00:05:20.757 to very complicated and compelling problems. 00:05:20.757 --> 00:05:23.604 And so I started to learn, because learning was cool. 00:05:23.604 --> 00:05:26.894 I learned that some infinite sets are bigger than other infinite sets, 00:05:26.894 --> 00:05:31.151 and I learned that iambic pentameter is and why it sounds so good to human ears. 00:05:31.151 --> 00:05:34.617 I learned that the Civil War was a nationalizing conflict, 00:05:34.617 --> 00:05:36.013 I learned some physics, 00:05:36.013 --> 00:05:39.143 I learned that correlation shouldn't be confused with causation - 00:05:39.143 --> 00:05:41.071 all of these things, by the way, 00:05:41.071 --> 00:05:44.541 enriched my life on a literally daily basis. 00:05:45.081 --> 00:05:48.413 And it's true that I don't use most of them for my "job", 00:05:48.413 --> 00:05:50.629 but that's not what it's about for me. 00:05:50.629 --> 00:05:52.184 It's about cartography. 00:05:52.184 --> 00:05:55.089 What is the process of cartography? 00:05:55.089 --> 00:05:57.719 It's, you know, sailing upon some land, and thinking 00:05:57.719 --> 00:06:00.199 "I think I'll draw that bit of land", 00:06:00.199 --> 00:06:03.546 and then wondering, "Maybe there's some more land to draw". 00:06:03.546 --> 00:06:05.777 And that's when learning really began for me. 00:06:05.777 --> 00:06:08.437 It's true that I had teachers that didn't give up on me, 00:06:08.437 --> 00:06:10.867 and I was very fortunate to have those teachers, 00:06:10.867 --> 00:06:14.996 because I often gave them cause to think there was no reason to invest in me. 00:06:14.996 --> 00:06:18.551 But a lot of the learning that I did in high school 00:06:18.551 --> 00:06:21.779 wasn't about what happened inside the classroom, 00:06:21.779 --> 00:06:24.294 it was about what happened outside of the classroom. 00:06:24.294 --> 00:06:26.047 For instance, I can tell you that, 00:06:26.047 --> 00:06:28.836 "There's a certain slant of light, [On] winter afternoons, 00:06:28.836 --> 00:06:31.712 That oppresses, like the heft [weight] Of cathedral tunes", 00:06:31.712 --> 00:06:34.113 not because I memorized Emily Dickinson in school, 00:06:34.113 --> 00:06:35.763 when I was in high school, 00:06:35.763 --> 00:06:38.433 but because there was a girl, when I was in high school, 00:06:38.433 --> 00:06:39.849 and her name was Amanda, 00:06:39.849 --> 00:06:43.290 and I had a crush on her, and she liked Emily Dickinson poetry. 00:06:43.290 --> 00:06:45.745 The reason I can tell you what opportunity cost is, 00:06:45.745 --> 00:06:49.503 is because one day when I was playing Super Mario Kart on my couch, 00:06:49.503 --> 00:06:51.573 my friend Emmet walked in, and he said, 00:06:51.573 --> 00:06:54.170 "How long have you been playing Super Mario Kart?", 00:06:54.170 --> 00:06:57.361 and I said, "I don't know, like, six hours?", and he said, 00:06:57.361 --> 00:07:00.632 "You realize that if you'd worked at Baskin-Robbins those six hours, 00:07:00.632 --> 00:07:03.243 you could have made thirty dollars, so in some ways, 00:07:03.243 --> 00:07:05.893 you just paid thirty dollars to play Super Mario Kart", 00:07:05.893 --> 00:07:08.839 and I was, like, "I'll take that deal." (Laughter) 00:07:10.458 --> 00:07:13.733 But I learned what opportunity cost is, 00:07:14.749 --> 00:07:16.606 and along the way, 00:07:16.606 --> 00:07:21.224 the map of my life got better, it got bigger, it contained more places. 00:07:21.695 --> 00:07:26.429 There were more things that might happen, more futures I might have. 00:07:27.037 --> 00:07:30.470 It wasn't a formal organized learning process, 00:07:30.470 --> 00:07:32.400 and I'm happy to admit that. 00:07:32.400 --> 00:07:35.558 It was spotty, it was inconsistent, there was a lot I didn't know. 00:07:35.558 --> 00:07:37.699 I might know, you know, that Cantor's idea 00:07:37.699 --> 00:07:40.611 that some infinite sets are larger than other infinite sets, 00:07:40.611 --> 00:07:43.477 but I didn't really understand the calculus behind that idea. 00:07:43.477 --> 00:07:45.651 I might know the idea of opportunity cost, 00:07:45.651 --> 00:07:47.955 but I didn't know the law of diminishing returns. 00:07:47.955 --> 00:07:50.757 But the great thing about imagining learning as cartography, 00:07:50.757 --> 00:07:52.867 instead of imagining it as arbitrary hurdles 00:07:52.867 --> 00:07:54.484 that you have to jump over 00:07:54.484 --> 00:07:58.046 is that you see a bit of coast line, and that makes you want to see more. 00:07:58.046 --> 00:08:00.495 And so now I do know at least some of the calculus 00:08:00.495 --> 00:08:02.135 that underlies all of that stuff. 00:08:02.135 --> 00:08:04.505 So, I had one learning community in high school, 00:08:04.505 --> 00:08:06.575 then I went to another for college, 00:08:06.575 --> 00:08:09.025 and then I went to another, when I started working 00:08:09.025 --> 00:08:10.556 at a magazine called "Booklist", 00:08:10.556 --> 00:08:11.796 where I was an assistant 00:08:11.796 --> 00:08:13.947 surrounded by astonishingly well-read people, 00:08:13.947 --> 00:08:17.152 and then I wrote a book, and like all authors dream of doing, 00:08:17.152 --> 00:08:19.500 I promptly quit my job. 00:08:20.753 --> 00:08:22.941 And for the first time since high school, 00:08:22.941 --> 00:08:25.941 I found myself without a learning community, 00:08:25.941 --> 00:08:27.521 and it was miserable. 00:08:27.521 --> 00:08:29.232 I hated it. 00:08:29.232 --> 00:08:32.541 I read many, many books during this two-year period. 00:08:32.541 --> 00:08:34.578 I read books about Stalin, 00:08:34.578 --> 00:08:37.881 and books about how the Uzbek people came to identify as Muslims, 00:08:37.881 --> 00:08:40.306 and I read books about how to make atomic bombs, 00:08:40.306 --> 00:08:42.946 but it just felt like I was creating my own hurdles, 00:08:42.946 --> 00:08:46.859 and then jumping over them myself, instead of feeling the excitement 00:08:46.859 --> 00:08:50.089 of being part of a community of learners, a community of people 00:08:50.089 --> 00:08:53.208 who are engaged together in a cartographic enterprise 00:08:53.208 --> 00:08:56.988 of trying to better understand and map the world around us. 00:08:56.988 --> 00:09:00.360 And then, in 2006, I met that guy. 00:09:00.360 --> 00:09:01.952 His name is Ze Frank. 00:09:01.952 --> 00:09:04.650 I didn't actually meet him, just on the Internet. 00:09:04.952 --> 00:09:09.432 Ze Frank was running, at the time, a show called "The Show with Ze Frank", 00:09:09.979 --> 00:09:14.181 and that was my way back into being a community learner again. 00:09:14.735 --> 00:09:17.267 Here's Ze talking about Las Vegas: 00:09:18.006 --> 00:09:21.523 (Video) Ze Frank: Las Vegas was built in the middle of a huge hot desert, 00:09:21.523 --> 00:09:24.582 almost everything here was brought from somewhere else - 00:09:24.583 --> 00:09:26.736 the sort of rocks, the trees, the waterfalls. 00:09:26.736 --> 00:09:29.816 These fish are almost as out of place as my pig that flew. 00:09:29.816 --> 00:09:32.706 Contrasted to the scorching desert that surrounds this place, 00:09:32.706 --> 00:09:33.836 so are these people. 00:09:33.836 --> 00:09:36.337 Things from all over the world have been rebuilt here, 00:09:36.337 --> 00:09:37.730 away from their histories, 00:09:37.730 --> 00:09:39.984 and the people that experience them differently. 00:09:39.984 --> 00:09:41.618 Sometimes, improvements were made. 00:09:41.618 --> 00:09:43.206 Even the Sphinx got a nose job. 00:09:43.206 --> 00:09:44.935 Here, what you see is what you get, 00:09:44.935 --> 00:09:47.752 and there's no reason to feel like you're missing anything. 00:09:47.752 --> 00:09:50.716 This New York means the same to me as it does to everyone else. 00:09:50.716 --> 00:09:52.239 Everything is out of context, 00:09:52.239 --> 00:09:54.373 and that means context allows for everything. 00:09:54.373 --> 00:09:56.281 Self Parking, Events Center, Shark Reef. 00:09:56.281 --> 00:09:59.914 This fabrication of place could be one of the world's greatest achievements, 00:09:59.914 --> 00:10:02.016 because no one belongs here, everyone does. 00:10:02.016 --> 00:10:05.130 As I walked around this morning, I noticed most of the buildings 00:10:05.130 --> 00:10:07.847 were huge mirrors reflecting the sun back into the desert. 00:10:07.847 --> 00:10:10.833 But unlike most mirrors, which present you with an outside view 00:10:10.833 --> 00:10:13.847 of yourself embedded in a place, these mirrors come back empty. 00:10:13.847 --> 00:10:16.057 John Green: It makes me nostalgic for the days 00:10:16.057 --> 00:10:18.757 when you could see the pixels in online video. (Laughter) 00:10:18.757 --> 00:10:22.678 Ze isn't just a great public intellectual, he's also a brilliant community builder, 00:10:22.678 --> 00:10:24.686 and the community of people that built up 00:10:24.686 --> 00:10:27.552 around these videos was in many ways a community of learners, 00:10:27.552 --> 00:10:30.700 so we played Ze Frank at chess collaboratively, and we beat him. 00:10:30.700 --> 00:10:34.654 We organized ourselves to take a young man on a road trip across the United States. 00:10:34.654 --> 00:10:37.222 We turned the Earth into a sandwich 00:10:37.222 --> 00:10:40.762 by having one person hold a piece of bread at one point on the Earth, 00:10:40.762 --> 00:10:43.056 and on the exact opposite point of the Earth 00:10:43.056 --> 00:10:45.416 having another person holding a piece of bread. 00:10:45.416 --> 00:10:50.809 I realize that these are silly ideas, but they are also 'learny' ideas, 00:10:52.240 --> 00:10:54.211 and that was what was so exciting to me, 00:10:54.211 --> 00:10:57.793 and if you go online, you can find communities like this all over the place. 00:10:57.793 --> 00:11:00.177 Follow the calculus tag on Tumblr, and yes, 00:11:00.177 --> 00:11:02.497 you will see people complaining about calculus, 00:11:02.497 --> 00:11:05.165 but you'll also see people re-blogging those complaints, 00:11:05.165 --> 00:11:08.164 making the argument that calculus is interesting and beautiful, 00:11:08.164 --> 00:11:11.925 and here's a way in to thinking about the problem that you find unsolvable. 00:11:11.925 --> 00:11:14.534 You can go to places like Reddit, and find sub-Reddits, 00:11:14.534 --> 00:11:17.034 like 'Ask a Historian', or 'Ask Science', 00:11:17.034 --> 00:11:20.247 where you can ask people who are in these fields 00:11:20.247 --> 00:11:21.817 a wide range of questions, 00:11:21.817 --> 00:11:23.998 from very serious ones to very silly ones. 00:11:23.998 --> 00:11:27.471 But to me, the most interesting communities of learners 00:11:27.471 --> 00:11:30.566 that are growing up on the Internet right now are on YouTube, 00:11:30.566 --> 00:11:31.978 and admittedly I am biased. 00:11:31.978 --> 00:11:35.943 But I think in a lot of ways, the YouTube page resembles a classroom. 00:11:36.567 --> 00:11:38.459 Look for instance at "Minute Physics", 00:11:38.459 --> 00:11:40.889 a guy who's teaching the world about physics. 00:11:40.889 --> 00:11:42.944 (Video) Let's cut to the chase. 00:11:42.944 --> 00:11:46.224 As of July 4th, 2012, the Higgs Boson is the last fundamental piece 00:11:46.224 --> 00:11:49.680 of the standard model of particle physics to be discovered experimentally. 00:11:49.680 --> 00:11:51.690 But, you might ask, why was the Higgs Boson 00:11:51.690 --> 00:11:53.200 included in the standard model, 00:11:53.200 --> 00:11:56.543 alongside well-known particles like electrons and photons and quarks, 00:11:56.543 --> 00:11:59.038 if it hadn't been discovered back then in the 1970s? 00:11:59.038 --> 00:12:01.273 Good question. There are two main reasons. 00:12:01.273 --> 00:12:04.516 First, just like the electron is an excitation in the electron field, 00:12:04.516 --> 00:12:07.306 the Higgs Boson is simply a particle which is an excitation 00:12:07.306 --> 00:12:09.426 of the everywhere-permeating Higgs field. 00:12:09.426 --> 00:12:11.677 The Higgs field in turn plays an integral role 00:12:11.677 --> 00:12:13.817 in our model for the weak nuclear force. 00:12:13.817 --> 00:12:16.854 In particular, the Higgs field helps explain why it's so weak. 00:12:16.854 --> 00:12:18.977 We'll talk more about this in a later video, 00:12:18.977 --> 00:12:21.947 but even though weak nuclear theory was confirmed in the 1980s, 00:12:21.947 --> 00:12:23.557 in the equations, the Higgs field 00:12:23.557 --> 00:12:25.862 is so inextricably jumbled with the weak force, 00:12:25.862 --> 00:12:27.975 that until now we've been unable to confirm 00:12:27.975 --> 00:12:29.875 its actual and independent existence. 00:12:29.875 --> 00:12:31.512 JG: Or here's a video that I made 00:12:31.512 --> 00:12:34.790 as part of my show "Crash Course", talking about World War I: 00:12:34.790 --> 00:12:38.292 (Video) The immediate cause was of course the assassination in Sarajevo 00:12:38.292 --> 00:12:41.210 of the Austrian Archduke Franz Ferdinand, on June 28, 1914, 00:12:41.210 --> 00:12:44.450 by a Bosnian-Serb nationalist named Gavrilo Princip. 00:12:44.450 --> 00:12:47.128 Quick aside: it's worth noting that the first big war 00:12:47.128 --> 00:12:49.858 of the twentieth century began with an act of terrorism. 00:12:49.858 --> 00:12:52.188 So Franz Ferdinand wasn't particularly well-liked 00:12:52.188 --> 00:12:54.388 by his uncle, the emperor Franz Joseph 00:12:54.388 --> 00:12:55.880 - now that is a moustache! - 00:12:55.880 --> 00:12:59.469 but even so, the assassination led Austria to issue an ultimatum to Serbia, 00:12:59.469 --> 00:13:02.634 whereupon Serbia accepted some, but not all, of Austria's demands, 00:13:02.635 --> 00:13:05.004 leading Austria to declare war against Serbia. 00:13:05.004 --> 00:13:08.440 And then Russia, due to its alliance with the Serbs, mobilized its army. 00:13:08.440 --> 00:13:10.958 Germany, because it had an alliance with Austria, 00:13:10.958 --> 00:13:13.038 told Russia to stop mobilizing, 00:13:13.038 --> 00:13:16.265 which Russia failed to do, so then Germany mobilized its own army, 00:13:16.265 --> 00:13:19.354 declared war on Russia, cemented an alliance with the Ottomans, 00:13:19.354 --> 00:13:22.458 and then declared war on France, because, you know - France! 00:13:22.458 --> 00:13:25.780 (Laughter) 00:13:25.780 --> 00:13:28.203 And it's not just physics and world history 00:13:28.203 --> 00:13:31.203 that people are choosing to learn through YouTube. 00:13:31.203 --> 00:13:33.737 Here's a video about abstract mathematics. 00:13:35.766 --> 00:13:38.468 (Video) So you're me, and you're in math class yet again, 00:13:38.468 --> 00:13:40.862 because they make you go, like, every single day. 00:13:40.862 --> 00:13:44.231 And you're learning about, I don't know, the sums of infinite series. 00:13:44.231 --> 00:13:46.915 That's a high school topic, right? Which is odd, because 00:13:46.915 --> 00:13:49.775 it's a cool topic, but they somehow manage to ruin it anyway. 00:13:49.775 --> 00:13:52.996 So I guess that's why they allow infinite series in the curriculum. 00:13:52.996 --> 00:13:55.536 So, in a quite understandable need for distraction, 00:13:55.536 --> 00:13:57.429 you're doodling and thinking more about 00:13:57.429 --> 00:14:00.536 what the plural of "series" should be than about the topic at hand. 00:14:00.536 --> 00:14:02.728 "Serieses," "seriese," "seriesen," and "serii?" 00:14:02.728 --> 00:14:04.868 Or is it that the singular should be changed? 00:14:04.868 --> 00:14:06.677 One "serie," or "serus," or "serum?" 00:14:06.677 --> 00:14:09.258 Just like the singular of "sheep" should be "shoop." 00:14:09.258 --> 00:14:11.145 But the whole concept of things like 00:14:11.145 --> 00:14:13.495 1/2 + 1/4 + 1/8 + 1/16 and so on, approaching one, 00:14:13.495 --> 00:14:16.145 is useful if, say, you want to draw a line of elephants 00:14:16.145 --> 00:14:18.121 each holding the tail of the next one: 00:14:18.121 --> 00:14:20.311 normal elephant, young elephant, baby elephant, 00:14:20.311 --> 00:14:22.463 dog-sized elephant, puppy-sized elephant... 00:14:22.463 --> 00:14:24.553 All the way down to Mr. Tusks and beyond. 00:14:24.553 --> 00:14:26.540 Which is at least a tiny bit awesome, 00:14:26.540 --> 00:14:29.483 because you can get an infinite number of elephants in a line 00:14:29.483 --> 00:14:32.033 and still have it fit across a single notebook page. 00:14:32.033 --> 00:14:34.696 JG: And lastly, here's Destin, from "Smarter Every Day", 00:14:34.696 --> 00:14:37.110 talking about the conservation of angular momentum 00:14:37.110 --> 00:14:38.730 and, since it's YouTube, cats: 00:14:38.730 --> 00:14:41.875 (Video) Hey, it's me, Destin. Welcome back to "Smarter Every Day". 00:14:41.875 --> 00:14:45.283 So you've probably observed that cats almost always land on their feet. 00:14:45.283 --> 00:14:46.813 Today's question is why? 00:14:46.813 --> 00:14:49.684 Like most simple questions, there's a very complex answer. 00:14:49.684 --> 00:14:51.844 For instance, let me reword this question: 00:14:51.844 --> 00:14:55.592 How does a cat go from feet up to feet down in a falling reference frame 00:14:55.592 --> 00:14:58.592 without violating the conservation of angular momentum? 00:15:00.402 --> 00:15:03.630 JG: So, here's something all of these videos have in common: 00:15:03.631 --> 00:15:06.630 they all have more than half a million views on YouTube. 00:15:06.630 --> 00:15:10.130 And those are people watching not in classrooms, 00:15:10.130 --> 00:15:13.123 but because they are part of the communities of learning 00:15:13.135 --> 00:15:15.734 that are being set up by these channels. 00:15:15.734 --> 00:15:18.706 And I said earlier that YouTube is like a classroom to me, 00:15:18.706 --> 00:15:21.396 and in many ways it is, because here is the instructor 00:15:21.396 --> 00:15:24.687 - it's like the old-fashioned classroom - here's the instructor, 00:15:24.687 --> 00:15:27.157 and then beneath the instructor is the students, 00:15:27.157 --> 00:15:29.164 and they're all having a conversation. 00:15:29.164 --> 00:15:31.070 And I know that YouTube Comments 00:15:31.070 --> 00:15:34.168 have a very bad reputation in the world of the Internet, 00:15:34.168 --> 00:15:37.436 but in fact, if you go on comments for these channels, 00:15:37.437 --> 00:15:40.436 what you'll find is people engaging the subject matter, 00:15:40.436 --> 00:15:45.018 asking difficult, complicated questions that are about the subject matter, 00:15:45.018 --> 00:15:47.492 and then other people answering those questions. 00:15:47.492 --> 00:15:50.231 And because the YouTube page is set up 00:15:50.231 --> 00:15:52.763 so that the place in which I'm talking to you 00:15:55.172 --> 00:15:56.633 is on the exact same page 00:15:56.633 --> 00:15:59.581 as your comments, you are participating in a live 00:15:59.581 --> 00:16:03.080 and real and active way in the conversation. 00:16:03.080 --> 00:16:07.018 And because I'm in comments usually, I get to participate with you, 00:16:07.018 --> 00:16:09.544 and you find this whether it's world history, 00:16:09.544 --> 00:16:12.544 or mathematics, or science, or whatever it is. 00:16:12.544 --> 00:16:16.012 You also see young people using the tools 00:16:16.012 --> 00:16:20.096 and the sort of genres of the Internet in order to create places 00:16:20.096 --> 00:16:22.997 for intellectual engagement instead of the ironic detachment 00:16:22.997 --> 00:16:27.374 that maybe most of us associate with memes and other Internet conventions, 00:16:27.374 --> 00:16:30.368 you know "Got bored - Invented calculus", 00:16:30.368 --> 00:16:33.741 or here's Honey Boo Boo criticizing industrial capitalism 00:16:33.741 --> 00:16:36.431 ["Liberal capitalism is not at all the Good of humanity. 00:16:36.431 --> 00:16:39.805 Quite the contrary; it is the vehicle of savage destructive nihilism"]. 00:16:39.805 --> 00:16:42.104 In case you can't see what she says... Yeah. 00:16:42.717 --> 00:16:47.000 I really believe that these spaces, these communities 00:16:47.882 --> 00:16:51.171 have become, for a new generation of learners, 00:16:51.171 --> 00:16:55.578 the kind of communities, the kind of cartographic communities 00:16:55.578 --> 00:16:59.828 that I had when I was in high school, and then again when I was in college. 00:17:00.425 --> 00:17:03.643 And as an adult, re-finding these communities 00:17:03.643 --> 00:17:06.643 has re-introduced me to a community of learners, 00:17:06.643 --> 00:17:11.665 and has encouraged me to continue to be a learner even in my adulthood, 00:17:12.065 --> 00:17:16.419 so that I no longer feel like learning is something reserved for the young. 00:17:16.419 --> 00:17:19.157 Vi Hart and "Minute Physics" introduced me 00:17:19.157 --> 00:17:21.708 to all kinds of things that I didn't know before. 00:17:21.708 --> 00:17:23.545 And I know that we all hearken back 00:17:23.545 --> 00:17:26.545 to the days of the Parisian salon in the Enlightenment, 00:17:26.545 --> 00:17:28.816 or to the Algonquin Round Table, and wish, 00:17:28.816 --> 00:17:31.266 "Oh, I wish I could have been a part of that, 00:17:31.266 --> 00:17:34.013 I wish I could have laughed at Dorothy Parker's jokes". 00:17:34.013 --> 00:17:38.823 But I'm here to tell you that these places exist, they still exist. 00:17:38.823 --> 00:17:44.356 They exist in corners of the Internet, where old men fear to tread. (Laughter) 00:17:45.093 --> 00:17:50.969 And I truly, truly believe that when we invented Agloe, New York, in the 1960s, 00:17:50.969 --> 00:17:55.519 when we made Agloe real, we were just getting started. 00:17:55.519 --> 00:17:57.108 Thank you. 00:17:57.109 --> 00:17:59.500 (Applause)