WEBVTT 00:00:08.621 --> 00:00:11.015 So, this is a map of New York State 00:00:11.015 --> 00:00:14.417 that was made in 1937 by the General Drafting Company. 00:00:14.417 --> 00:00:17.767 It's an extremely famous map among cartography nerds, 00:00:17.767 --> 00:00:20.519 because down here at the bottom of the Catskill Mountains 00:00:20.519 --> 00:00:22.576 there is a little town called Roscoe 00:00:22.600 --> 00:00:25.500 - actually, this will go easier if I just put it up here - 00:00:27.626 --> 00:00:31.105 There's Roscoe, and then, right above Roscoe, is Rockland, New York, 00:00:31.105 --> 00:00:35.058 and then right above that is the tiny town of Agloe, New York. 00:00:35.058 --> 00:00:38.182 Agloe, New York, is very famous to cartographers, 00:00:38.182 --> 00:00:40.078 because it's a paper town. 00:00:40.078 --> 00:00:43.078 It's also known as a copyright trap. 00:00:43.078 --> 00:00:46.470 Because my map of New York and your map of New York 00:00:46.470 --> 00:00:49.714 are going to look very similar, on account of the shape of New York. 00:00:49.714 --> 00:00:54.355 Often, map makers will insert fake places onto their maps, 00:00:54.355 --> 00:00:56.969 in order to protect their copyright, because then, 00:00:56.969 --> 00:00:59.599 if my fake place shows up on your map, 00:00:59.599 --> 00:01:02.848 I can be well and truly sure that you have robbed me. 00:01:02.848 --> 00:01:08.110 Agloe is a scrabblization of the initials of the two guys who made this map 00:01:08.110 --> 00:01:11.007 Ernest G. Alpers and Otto Lindberg, 00:01:11.007 --> 00:01:13.478 and they released this map in 1937. 00:01:13.478 --> 00:01:17.464 Decades later, Rand McNally releases a map 00:01:17.464 --> 00:01:21.620 with Agloe, New York, on it, at the same exact intersection 00:01:21.620 --> 00:01:24.662 of two dirt roads in the middle of nowhere. 00:01:24.662 --> 00:01:28.126 Well, you can imagine the delight over at General Drafting. 00:01:28.126 --> 00:01:31.126 They immediately called Rand McNally, and they say, 00:01:31.126 --> 00:01:34.872 "We've caught you! We made Agloe, New York, up. 00:01:34.872 --> 00:01:37.036 It is a fake place. It's a paper town. 00:01:37.036 --> 00:01:39.226 We're going to sue your pants off!" 00:01:39.226 --> 00:01:43.856 And Rand McNally says, "No, no, no, no, Agloe is real." 00:01:45.113 --> 00:01:49.082 Because people kept going to that intersection of two dirt roads 00:01:49.082 --> 00:01:50.802 (Laughter) 00:01:50.819 --> 00:01:52.102 in the middle of nowhere, 00:01:52.102 --> 00:01:55.247 expecting there to be a place called Agloe, 00:01:55.643 --> 00:01:58.716 someone built a place called Agloe, New York. 00:01:59.798 --> 00:02:02.974 It had a gas station, a general store, two houses at its peak. 00:02:02.974 --> 00:02:05.244 (Laughter) 00:02:06.205 --> 00:02:10.595 And this is of course a completely irresistible metaphor to a novelist, 00:02:10.595 --> 00:02:15.293 because we would all like to believe that the stuff that we write down on paper 00:02:15.293 --> 00:02:18.158 can change the actual world in which we're actually living - 00:02:18.158 --> 00:02:20.596 which is why my third book is called "Paper Towns". 00:02:20.596 --> 00:02:24.493 But what interests me ultimately more than the medium in which this happened 00:02:24.493 --> 00:02:27.195 is the phenomenon itself. 00:02:28.256 --> 00:02:32.284 It's easy enough to say that the world shapes our maps of the world, right? 00:02:32.284 --> 00:02:36.546 Like the overall shape of the world is obviously going to affect our maps. 00:02:37.110 --> 00:02:40.339 But what I find a lot more interesting is the way 00:02:40.339 --> 00:02:43.880 that the manner in which we map the world changes the world. 00:02:44.369 --> 00:02:48.676 Because the world would truly be a different place if North were down. 00:02:48.676 --> 00:02:52.175 And the world would be a truly different place if Alaska and Russia 00:02:52.175 --> 00:02:54.461 weren't on opposite sides of the map. 00:02:54.461 --> 00:02:56.411 And the world would be a different place 00:02:56.411 --> 00:03:00.047 if we projected Europe to show it in its actual size. 00:03:00.659 --> 00:03:04.320 The world is changed by our maps of the world. 00:03:04.760 --> 00:03:09.390 The way that we choose to, sort of, our personal cartographic enterprise 00:03:09.717 --> 00:03:12.330 also shapes the map of our lives, 00:03:12.330 --> 00:03:14.780 and that in turn shapes our lives. 00:03:14.780 --> 00:03:19.088 I believe that what we map changes the life we lead. 00:03:19.670 --> 00:03:23.539 And I don't mean that in some, like, secrecy Oprah's Angels network, like, 00:03:23.539 --> 00:03:26.578 you-can-think-your-way-out -of-cancer sense. 00:03:26.578 --> 00:03:29.597 But I do believe that while maps don't show you 00:03:29.597 --> 00:03:32.597 where you will go in your life, 00:03:33.116 --> 00:03:35.168 they show you where you might go. 00:03:35.168 --> 00:03:39.743 You very rarely go to a place that isn't on your personal map. 00:03:40.016 --> 00:03:43.304 So I was a really terrible student when I was a kid. 00:03:43.304 --> 00:03:46.161 My GPA was consistently in the low 2s, 00:03:46.482 --> 00:03:49.267 and I think the reason that I was such a terrible student 00:03:49.267 --> 00:03:52.177 is that I felt like education was just a series of hurdles 00:03:52.177 --> 00:03:55.177 that had been erected before me, 00:03:55.177 --> 00:03:58.873 and I had to jump over in order to achieve adulthood. 00:03:58.873 --> 00:04:01.368 And I didn't really want to jump over these hurdles, 00:04:01.368 --> 00:04:04.333 because they seemed completely arbitrary, so I often wouldn't, 00:04:04.333 --> 00:04:06.474 and then people would threaten me, you know, 00:04:06.474 --> 00:04:09.467 they'd threaten me with "this going on my permanent record", 00:04:09.467 --> 00:04:11.363 or "you'll never get a good job". 00:04:11.363 --> 00:04:13.296 I didn't want a good job! 00:04:13.296 --> 00:04:16.112 As far as I could tell at eleven or twelve years old, like, 00:04:16.112 --> 00:04:19.296 people with good jobs woke up very early in the morning, 00:04:19.296 --> 00:04:21.022 (Laughter) 00:04:21.022 --> 00:04:25.211 and the men who had good jobs, one of the first things they did 00:04:25.211 --> 00:04:29.765 was tie a strangulation item of clothing around their necks. 00:04:30.301 --> 00:04:32.493 They literally put nooses on themselves, 00:04:32.493 --> 00:04:35.403 and then they went off to their jobs, whatever they were. 00:04:35.403 --> 00:04:38.226 That's not a recipe for a happy life. 00:04:38.226 --> 00:04:42.455 These people - in my, symbol-obsessed, twelve-year-old imagination, 00:04:42.455 --> 00:04:44.670 these people who are strangling themselves 00:04:44.670 --> 00:04:47.321 as one of the first things they do each morning, 00:04:47.321 --> 00:04:49.246 they can't possibly be happy. 00:04:49.246 --> 00:04:51.541 Why would I want to jump over all these hurdles 00:04:51.541 --> 00:04:53.801 and have that be the end? 00:04:53.801 --> 00:04:55.823 That's a terrible end! 00:04:55.823 --> 00:04:58.726 And then, when I was in tenth grade, I went to this school, 00:04:58.726 --> 00:05:01.758 Indian Springs School, a small boarding school, 00:05:01.758 --> 00:05:03.458 outside of Birmingham, Alabama, 00:05:03.458 --> 00:05:06.775 and all at once I became a learner. 00:05:06.952 --> 00:05:09.195 And I became a learner, because I found myself 00:05:09.195 --> 00:05:11.329 in a community of learners. 00:05:11.329 --> 00:05:13.728 I found myself surrounded by people 00:05:13.728 --> 00:05:16.728 who celebrated intellectualism and engagement, 00:05:16.728 --> 00:05:20.313 and who thought that my ironic oh-so-cool disengagement 00:05:20.313 --> 00:05:22.383 wasn't clever, or funny, 00:05:22.383 --> 00:05:25.757 but, like, it was a simple and unspectacular response 00:05:25.757 --> 00:05:28.757 to very complicated and compelling problems. 00:05:28.757 --> 00:05:31.604 And so I started to learn, because learning was cool. 00:05:31.604 --> 00:05:34.894 I learned that some infinite sets are bigger than other infinite sets, 00:05:34.894 --> 00:05:39.151 and I learned what iambic pentameter is and why it sounds so good to human ears. 00:05:39.151 --> 00:05:42.617 I learned that the Civil War was a nationalizing conflict, 00:05:42.617 --> 00:05:44.013 I learned some physics, 00:05:44.013 --> 00:05:47.143 I learned that correlation shouldn't be confused with causation - 00:05:47.143 --> 00:05:49.071 all of these things, by the way, 00:05:49.071 --> 00:05:52.541 enriched my life on a literally daily basis. 00:05:53.081 --> 00:05:56.413 And it's true that I don't use most of them for my "job", 00:05:56.413 --> 00:05:58.629 but that's not what it's about for me. 00:05:58.629 --> 00:06:00.184 It's about cartography. 00:06:00.184 --> 00:06:03.089 What is the process of cartography? 00:06:03.089 --> 00:06:05.719 It's, you know, sailing upon some land, and thinking 00:06:05.719 --> 00:06:08.199 "I think I'll draw that bit of land", 00:06:08.199 --> 00:06:11.546 and then wondering, "Maybe there's some more land to draw". 00:06:11.546 --> 00:06:13.777 And that's when learning really began for me. 00:06:13.777 --> 00:06:16.437 It's true that I had teachers that didn't give up on me, 00:06:16.437 --> 00:06:18.867 and I was very fortunate to have those teachers, 00:06:18.867 --> 00:06:22.996 because I often gave them cause to think there was no reason to invest in me. 00:06:22.996 --> 00:06:26.551 But a lot of the learning that I did in high school 00:06:26.551 --> 00:06:29.779 wasn't about what happened inside the classroom, 00:06:29.779 --> 00:06:32.294 it was about what happened outside of the classroom. 00:06:32.294 --> 00:06:34.047 For instance, I can tell you that, 00:06:34.047 --> 00:06:36.836 "There's a certain slant of light, [On] winter afternoons, 00:06:36.836 --> 00:06:39.712 That oppresses, like the heft [weight] Of cathedral tunes", 00:06:39.712 --> 00:06:42.113 not because I memorized Emily Dickinson in school, 00:06:42.113 --> 00:06:43.763 when I was in high school, 00:06:43.763 --> 00:06:46.433 but because there was a girl, when I was in high school, 00:06:46.433 --> 00:06:47.849 and her name was Amanda, 00:06:47.849 --> 00:06:51.290 and I had a crush on her, and she liked Emily Dickinson poetry. 00:06:51.290 --> 00:06:53.745 The reason I can tell you what opportunity cost is, 00:06:53.745 --> 00:06:57.503 is because one day when I was playing Super Mario Kart on my couch, 00:06:57.503 --> 00:06:59.573 my friend Emmet walked in, and he said, 00:06:59.573 --> 00:07:02.170 "How long have you been playing Super Mario Kart?", 00:07:02.170 --> 00:07:05.361 and I said, "I don't know, like, six hours?", and he said, 00:07:05.361 --> 00:07:08.632 "You realize that if you'd worked at Baskin-Robbins those six hours, 00:07:08.632 --> 00:07:11.243 you could have made thirty dollars, so in some ways, 00:07:11.243 --> 00:07:13.893 you just paid thirty dollars to play Super Mario Kart", 00:07:13.893 --> 00:07:16.839 and I was, like, "I'll take that deal." (Laughter) 00:07:18.458 --> 00:07:21.733 But I learned what opportunity cost is, 00:07:22.749 --> 00:07:24.606 and along the way, 00:07:24.606 --> 00:07:29.224 the map of my life got better, it got bigger, it contained more places. 00:07:29.695 --> 00:07:34.429 There were more things that might happen, more futures I might have. 00:07:35.037 --> 00:07:38.470 It wasn't a formal organized learning process, 00:07:38.470 --> 00:07:40.400 and I'm happy to admit that. 00:07:40.400 --> 00:07:43.558 It was spotty, it was inconsistent, there was a lot I didn't know. 00:07:43.558 --> 00:07:45.699 I might know, you know, that Cantor's idea 00:07:45.699 --> 00:07:48.611 that some infinite sets are larger than other infinite sets, 00:07:48.611 --> 00:07:51.477 but I didn't really understand the calculus behind that idea. 00:07:51.477 --> 00:07:53.651 I might know the idea of opportunity cost, 00:07:53.651 --> 00:07:55.955 but I didn't know the law of diminishing returns. 00:07:55.955 --> 00:07:58.757 But the great thing about imagining learning as cartography, 00:07:58.757 --> 00:08:00.867 instead of imagining it as arbitrary hurdles 00:08:00.867 --> 00:08:02.484 that you have to jump over 00:08:02.484 --> 00:08:06.046 is that you see a bit of coast line, and that makes you want to see more. 00:08:06.046 --> 00:08:08.495 And so now I do know at least some of the calculus 00:08:08.495 --> 00:08:10.135 that underlies all of that stuff. 00:08:10.135 --> 00:08:12.505 So, I had one learning community in high school, 00:08:12.505 --> 00:08:14.575 then I went to another for college, 00:08:14.575 --> 00:08:17.025 and then I went to another, when I started working 00:08:17.025 --> 00:08:18.556 at a magazine called "Booklist", 00:08:18.556 --> 00:08:19.796 where I was an assistant 00:08:19.796 --> 00:08:21.947 surrounded by astonishingly well-read people, 00:08:21.947 --> 00:08:25.152 and then I wrote a book, and like all authors dream of doing, 00:08:25.152 --> 00:08:27.500 I promptly quit my job. 00:08:28.753 --> 00:08:30.941 And for the first time since high school, 00:08:30.941 --> 00:08:33.941 I found myself without a learning community, 00:08:33.941 --> 00:08:35.520 and it was miserable. 00:08:35.520 --> 00:08:37.232 I hated it. 00:08:37.232 --> 00:08:40.541 I read many, many books during this two-year period. 00:08:40.541 --> 00:08:42.578 I read books about Stalin, 00:08:42.578 --> 00:08:45.882 and books about how the Uzbek people came to identify as Muslims, 00:08:45.882 --> 00:08:48.306 and I read books about how to make atomic bombs, 00:08:48.306 --> 00:08:50.946 but it just felt like I was creating my own hurdles, 00:08:50.946 --> 00:08:54.859 and then jumping over them myself, instead of feeling the excitement 00:08:54.859 --> 00:08:58.089 of being part of a community of learners, a community of people 00:08:58.089 --> 00:09:01.208 who are engaged together in a cartographic enterprise 00:09:01.208 --> 00:09:04.988 of trying to better understand and map the world around us. 00:09:04.988 --> 00:09:08.360 And then, in 2006, I met that guy. 00:09:08.360 --> 00:09:09.952 His name is Ze Frank. 00:09:09.952 --> 00:09:12.650 I didn't actually meet him, just on the Internet. 00:09:12.952 --> 00:09:17.432 Ze Frank was running, at the time, a show called "The Show with Ze Frank", 00:09:17.979 --> 00:09:22.181 and that was my way back into being a community learner again. 00:09:22.735 --> 00:09:25.267 Here's Ze talking about Las Vegas: 00:09:26.006 --> 00:09:29.523 (Video) Ze Frank: Las Vegas was built in the middle of a huge hot desert, 00:09:29.523 --> 00:09:32.582 almost everything here was brought from somewhere else - 00:09:32.583 --> 00:09:34.736 the sort of rocks, the trees, the waterfalls. 00:09:34.736 --> 00:09:37.816 These fish are almost as out of place as my pig that flew. 00:09:37.816 --> 00:09:40.706 Contrasted to the scorching desert that surrounds this place, 00:09:40.706 --> 00:09:41.836 so are these people. 00:09:41.836 --> 00:09:44.337 Things from all over the world have been rebuilt here, 00:09:44.337 --> 00:09:45.730 away from their histories, 00:09:45.730 --> 00:09:47.984 and the people that experience them differently. 00:09:47.984 --> 00:09:49.618 Sometimes, improvements were made. 00:09:49.618 --> 00:09:51.206 Even the Sphinx got a nose job. 00:09:51.206 --> 00:09:52.935 Here, what you see is what you get, 00:09:52.935 --> 00:09:55.752 and there's no reason to feel like you're missing anything. 00:09:55.752 --> 00:09:58.716 This New York means the same to me as it does to everyone else. 00:09:58.716 --> 00:10:00.239 Everything is out of context, 00:10:00.239 --> 00:10:02.373 and that means context allows for everything. 00:10:02.373 --> 00:10:04.281 Self Parking, Events Center, Shark Reef. 00:10:04.281 --> 00:10:07.914 This fabrication of place could be one of the world's greatest achievements, 00:10:07.914 --> 00:10:10.016 because no one belongs here, everyone does. 00:10:10.016 --> 00:10:13.130 As I walked around this morning, I noticed most of the buildings 00:10:13.130 --> 00:10:15.847 were huge mirrors reflecting the sun back into the desert. 00:10:15.847 --> 00:10:18.833 But unlike most mirrors, which present you with an outside view 00:10:18.833 --> 00:10:21.847 of yourself embedded in a place, these mirrors come back empty. 00:10:21.847 --> 00:10:24.057 John Green: It makes me nostalgic for the days 00:10:24.057 --> 00:10:26.757 when you could see the pixels in online video. (Laughter) 00:10:26.757 --> 00:10:30.678 Ze isn't just a great public intellectual, he's also a brilliant community builder, 00:10:30.678 --> 00:10:32.686 and the community of people that built up 00:10:32.686 --> 00:10:35.552 around these videos was in many ways a community of learners, 00:10:35.552 --> 00:10:38.700 so we played Ze Frank at chess collaboratively, and we beat him. 00:10:38.700 --> 00:10:42.654 We organized ourselves to take a young man on a road trip across the United States. 00:10:42.654 --> 00:10:45.222 We turned the Earth into a sandwich 00:10:45.222 --> 00:10:48.762 by having one person hold a piece of bread at one point on the Earth, 00:10:48.762 --> 00:10:51.056 and on the exact opposite point of the Earth 00:10:51.056 --> 00:10:53.416 having another person holding a piece of bread. 00:10:53.416 --> 00:10:58.809 I realize that these are silly ideas, but they are also 'learny' ideas, 00:11:00.240 --> 00:11:02.211 and that was what was so exciting to me, 00:11:02.211 --> 00:11:05.793 and if you go online, you can find communities like this all over the place. 00:11:05.793 --> 00:11:08.177 Follow the calculus tag on Tumblr, and yes, 00:11:08.177 --> 00:11:10.497 you will see people complaining about calculus, 00:11:10.497 --> 00:11:13.165 but you'll also see people re-blogging those complaints, 00:11:13.165 --> 00:11:16.164 making the argument that calculus is interesting and beautiful, 00:11:16.164 --> 00:11:19.925 and here's a way in to thinking about the problem that you find unsolvable. 00:11:19.925 --> 00:11:22.534 You can go to places like Reddit, and find sub-Reddits, 00:11:22.534 --> 00:11:25.034 like 'Ask a Historian', or 'Ask Science', 00:11:25.034 --> 00:11:28.247 where you can ask people who are in these fields 00:11:28.247 --> 00:11:29.817 a wide range of questions, 00:11:29.817 --> 00:11:31.998 from very serious ones to very silly ones. 00:11:31.998 --> 00:11:35.471 But to me, the most interesting communities of learners 00:11:35.471 --> 00:11:38.566 that are growing up on the Internet right now are on YouTube, 00:11:38.566 --> 00:11:39.978 and admittedly I am biased. 00:11:39.978 --> 00:11:43.943 But I think in a lot of ways, the YouTube page resembles a classroom. 00:11:44.567 --> 00:11:46.459 Look for instance at "Minute Physics", 00:11:46.459 --> 00:11:48.889 a guy who's teaching the world about physics. 00:11:48.889 --> 00:11:50.944 (Video) Let's cut to the chase. 00:11:50.944 --> 00:11:54.224 As of July 4th, 2012, the Higgs Boson is the last fundamental piece 00:11:54.224 --> 00:11:57.680 of the standard model of particle physics to be discovered experimentally. 00:11:57.680 --> 00:11:59.690 But, you might ask, why was the Higgs Boson 00:11:59.690 --> 00:12:01.200 included in the standard model, 00:12:01.200 --> 00:12:04.543 alongside well-known particles like electrons and photons and quarks, 00:12:04.543 --> 00:12:07.038 if it hadn't been discovered back then in the 1970s? 00:12:07.038 --> 00:12:09.273 Good question. There are two main reasons. 00:12:09.273 --> 00:12:12.516 First, just like the electron is an excitation in the electron field, 00:12:12.516 --> 00:12:15.306 the Higgs Boson is simply a particle which is an excitation 00:12:15.306 --> 00:12:17.426 of the everywhere-permeating Higgs field. 00:12:17.426 --> 00:12:19.677 The Higgs field in turn plays an integral role 00:12:19.677 --> 00:12:21.817 in our model for the weak nuclear force. 00:12:21.817 --> 00:12:24.854 In particular, the Higgs field helps explain why it's so weak. 00:12:24.854 --> 00:12:26.977 We'll talk more about this in a later video, 00:12:26.977 --> 00:12:29.947 but even though weak nuclear theory was confirmed in the 1980s, 00:12:29.947 --> 00:12:31.557 in the equations, the Higgs field 00:12:31.557 --> 00:12:33.862 is so inextricably jumbled with the weak force, 00:12:33.862 --> 00:12:35.975 that until now we've been unable to confirm 00:12:35.975 --> 00:12:37.875 its actual and independent existence. 00:12:37.875 --> 00:12:39.512 JG: Or here's a video that I made 00:12:39.512 --> 00:12:42.790 as part of my show "Crash Course", talking about World War I: 00:12:42.790 --> 00:12:46.292 (Video) The immediate cause was of course the assassination in Sarajevo 00:12:46.292 --> 00:12:49.210 of the Austrian Archduke Franz Ferdinand, on June 28, 1914, 00:12:49.210 --> 00:12:52.450 by a Bosnian-Serb nationalist named Gavrilo Princip. 00:12:52.450 --> 00:12:55.128 Quick aside: it's worth noting that the first big war 00:12:55.128 --> 00:12:57.858 of the twentieth century began with an act of terrorism. 00:12:57.858 --> 00:13:00.188 So Franz Ferdinand wasn't particularly well-liked 00:13:00.188 --> 00:13:02.388 by his uncle, the emperor Franz Joseph 00:13:02.388 --> 00:13:03.880 - now that is a moustache! - 00:13:03.880 --> 00:13:07.469 but even so, the assassination led Austria to issue an ultimatum to Serbia, 00:13:07.469 --> 00:13:10.634 whereupon Serbia accepted some, but not all, of Austria's demands, 00:13:10.635 --> 00:13:13.004 leading Austria to declare war against Serbia. 00:13:13.004 --> 00:13:16.440 And then Russia, due to its alliance with the Serbs, mobilized its army. 00:13:16.440 --> 00:13:18.958 Germany, because it had an alliance with Austria, 00:13:18.958 --> 00:13:21.038 told Russia to stop mobilizing, 00:13:21.038 --> 00:13:24.265 which Russia failed to do, so then Germany mobilized its own army, 00:13:24.265 --> 00:13:27.354 declared war on Russia, cemented an alliance with the Ottomans, 00:13:27.354 --> 00:13:30.458 and then declared war on France, because, you know - France! 00:13:30.458 --> 00:13:33.780 (Laughter) 00:13:33.780 --> 00:13:36.203 And it's not just physics and world history 00:13:36.203 --> 00:13:39.203 that people are choosing to learn through YouTube. 00:13:39.203 --> 00:13:41.737 Here's a video about abstract mathematics. 00:13:43.766 --> 00:13:46.468 (Video) So you're me, and you're in math class yet again, 00:13:46.468 --> 00:13:48.862 because they make you go, like, every single day. 00:13:48.862 --> 00:13:52.231 And you're learning about, I don't know, the sums of infinite series. 00:13:52.231 --> 00:13:54.915 That's a high school topic, right? Which is odd, because 00:13:54.915 --> 00:13:57.775 it's a cool topic, but they somehow manage to ruin it anyway. 00:13:57.775 --> 00:14:00.996 So I guess that's why they allow infinite series in the curriculum. 00:14:00.996 --> 00:14:03.536 So, in a quite understandable need for distraction, 00:14:03.536 --> 00:14:05.429 you're doodling and thinking more about 00:14:05.429 --> 00:14:08.536 what the plural of "series" should be than about the topic at hand. 00:14:08.536 --> 00:14:10.728 "Serieses," "seriese," "seriesen," and "serii?" 00:14:10.728 --> 00:14:12.868 Or is it that the singular should be changed? 00:14:12.868 --> 00:14:14.677 One "serie," or "serus," or "serum?" 00:14:14.677 --> 00:14:17.258 Just like the singular of "sheep" should be "shoop." 00:14:17.258 --> 00:14:19.145 But the whole concept of things like 00:14:19.145 --> 00:14:21.495 1/2 + 1/4 + 1/8 + 1/16 and so on, approaching one, 00:14:21.495 --> 00:14:24.145 is useful if, say, you want to draw a line of elephants 00:14:24.145 --> 00:14:26.121 each holding the tail of the next one: 00:14:26.121 --> 00:14:28.311 normal elephant, young elephant, baby elephant, 00:14:28.311 --> 00:14:30.463 dog-sized elephant, puppy-sized elephant... 00:14:30.463 --> 00:14:32.553 All the way down to Mr. Tusks and beyond. 00:14:32.553 --> 00:14:34.540 Which is at least a tiny bit awesome, 00:14:34.540 --> 00:14:37.483 because you can get an infinite number of elephants in a line 00:14:37.483 --> 00:14:40.033 and still have it fit across a single notebook page. 00:14:40.033 --> 00:14:42.696 JG: And lastly, here's Destin, from "Smarter Every Day", 00:14:42.696 --> 00:14:45.110 talking about the conservation of angular momentum 00:14:45.110 --> 00:14:46.730 and, since it's YouTube, cats: 00:14:46.730 --> 00:14:49.875 (Video) Hey, it's me, Destin. Welcome back to "Smarter Every Day". 00:14:49.875 --> 00:14:53.283 So you've probably observed that cats almost always land on their feet. 00:14:53.283 --> 00:14:54.813 Today's question is why? 00:14:54.813 --> 00:14:57.684 Like most simple questions, there's a very complex answer. 00:14:57.684 --> 00:14:59.844 For instance, let me reword this question: 00:14:59.844 --> 00:15:03.592 How does a cat go from feet up to feet down in a falling reference frame 00:15:03.592 --> 00:15:06.592 without violating the conservation of angular momentum? 00:15:08.402 --> 00:15:11.630 JG: So, here's something all of these videos have in common: 00:15:11.631 --> 00:15:14.630 they all have more than half a million views on YouTube. 00:15:14.630 --> 00:15:18.130 And those are people watching not in classrooms, 00:15:18.130 --> 00:15:21.123 but because they are part of the communities of learning 00:15:21.135 --> 00:15:23.734 that are being set up by these channels. 00:15:23.734 --> 00:15:26.706 And I said earlier that YouTube is like a classroom to me, 00:15:26.706 --> 00:15:29.396 and in many ways it is, because here is the instructor 00:15:29.396 --> 00:15:32.687 - it's like the old-fashioned classroom - here's the instructor, 00:15:32.687 --> 00:15:35.157 and then beneath the instructor is the students, 00:15:35.157 --> 00:15:37.164 and they're all having a conversation. 00:15:37.164 --> 00:15:39.070 And I know that YouTube Comments 00:15:39.070 --> 00:15:42.168 have a very bad reputation in the world of the Internet, 00:15:42.168 --> 00:15:45.436 but in fact, if you go on comments for these channels, 00:15:45.437 --> 00:15:48.436 what you'll find is people engaging the subject matter, 00:15:48.436 --> 00:15:53.018 asking difficult, complicated questions that are about the subject matter, 00:15:53.018 --> 00:15:55.492 and then other people answering those questions. 00:15:55.492 --> 00:15:58.231 And because the YouTube page is set up 00:15:58.231 --> 00:16:00.763 so that the place in which I'm talking to you 00:16:03.172 --> 00:16:04.633 is on the exact same page 00:16:04.633 --> 00:16:07.581 as your comments, you are participating in a live 00:16:07.581 --> 00:16:11.080 and real and active way in the conversation. 00:16:11.080 --> 00:16:15.018 And because I'm in comments usually, I get to participate with you, 00:16:15.018 --> 00:16:17.544 and you find this whether it's world history, 00:16:17.544 --> 00:16:20.544 or mathematics, or science, or whatever it is. 00:16:20.544 --> 00:16:24.012 You also see young people using the tools 00:16:24.012 --> 00:16:28.096 and the sort of genres of the Internet in order to create places 00:16:28.096 --> 00:16:30.997 for intellectual engagement instead of the ironic detachment 00:16:30.997 --> 00:16:35.374 that maybe most of us associate with memes and other Internet conventions, 00:16:35.374 --> 00:16:38.368 you know "Got bored - Invented calculus", 00:16:38.368 --> 00:16:41.741 or here's Honey Boo Boo criticizing industrial capitalism 00:16:41.741 --> 00:16:44.431 ["Liberal capitalism is not at all the Good of humanity. 00:16:44.431 --> 00:16:47.805 Quite the contrary; it is the vehicle of savage destructive nihilism"]. 00:16:47.805 --> 00:16:50.104 In case you can't see what she says... Yeah. 00:16:50.717 --> 00:16:55.000 I really believe that these spaces, these communities 00:16:55.882 --> 00:16:59.171 have become, for a new generation of learners, 00:16:59.171 --> 00:17:03.578 the kind of communities, the kind of cartographic communities 00:17:03.578 --> 00:17:07.828 that I had when I was in high school, and then again when I was in college. 00:17:08.425 --> 00:17:11.643 And as an adult, re-finding these communities 00:17:11.643 --> 00:17:14.643 has re-introduced me to a community of learners, 00:17:14.643 --> 00:17:19.665 and has encouraged me to continue to be a learner even in my adulthood, 00:17:20.065 --> 00:17:24.419 so that I no longer feel like learning is something reserved for the young. 00:17:24.419 --> 00:17:27.157 Vi Hart and "Minute Physics" introduced me 00:17:27.157 --> 00:17:29.708 to all kinds of things that I didn't know before. 00:17:29.708 --> 00:17:31.545 And I know that we all hearken back 00:17:31.545 --> 00:17:34.545 to the days of the Parisian salon in the Enlightenment, 00:17:34.545 --> 00:17:36.816 or to the Algonquin Round Table, and wish, 00:17:36.816 --> 00:17:39.266 "Oh, I wish I could have been a part of that, 00:17:39.266 --> 00:17:42.013 I wish I could have laughed at Dorothy Parker's jokes". 00:17:42.013 --> 00:17:46.823 But I'm here to tell you that these places exist, they still exist. 00:17:46.823 --> 00:17:52.356 They exist in corners of the Internet, where old men fear to tread. (Laughter) 00:17:53.093 --> 00:17:58.969 And I truly, truly believe that when we invented Agloe, New York, in the 1960s, 00:17:58.969 --> 00:18:03.519 when we made Agloe real, we were just getting started. 00:18:03.519 --> 00:18:05.108 Thank you. 00:18:05.109 --> 00:18:07.500 (Applause)