[Script Info] Title: [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:00.15,0:00:00.98,Default,,0000,0000,0000,,- [David] Raiders, hello. Dialogue: 0,0:00:00.98,0:00:03.75,Default,,0000,0000,0000,,This video is about\Nanalyzing visual evidence, Dialogue: 0,0:00:03.75,0:00:05.19,Default,,0000,0000,0000,,but let's cut right to it. Dialogue: 0,0:00:05.19,0:00:07.74,Default,,0000,0000,0000,,It's also about vampires. Dialogue: 0,0:00:07.74,0:00:08.79,Default,,0000,0000,0000,,(spooky music)\N(thunder booming) Dialogue: 0,0:00:08.79,0:00:09.69,Default,,0000,0000,0000,,And we'll get to them, Dialogue: 0,0:00:09.69,0:00:11.72,Default,,0000,0000,0000,,those cape wearing, widows peaked wonders Dialogue: 0,0:00:11.72,0:00:13.47,Default,,0000,0000,0000,,of the mountains of Transylvania. Dialogue: 0,0:00:13.47,0:00:18.47,Default,,0000,0000,0000,,But first, what do we even\Nmean by visual evidence? Dialogue: 0,0:00:18.78,0:00:20.22,Default,,0000,0000,0000,,Like textual evidence, sure, Dialogue: 0,0:00:20.22,0:00:21.78,Default,,0000,0000,0000,,we know what textual evidence is. Dialogue: 0,0:00:21.78,0:00:23.46,Default,,0000,0000,0000,,It's written language. Dialogue: 0,0:00:23.46,0:00:26.70,Default,,0000,0000,0000,,How do we know there's\Npotassium hydroxide in my soap? Dialogue: 0,0:00:26.70,0:00:27.69,Default,,0000,0000,0000,,It's on the label. Dialogue: 0,0:00:27.69,0:00:30.87,Default,,0000,0000,0000,,Ah, but how much potassium hydroxide? Dialogue: 0,0:00:30.87,0:00:33.33,Default,,0000,0000,0000,,Visual evidence can tell us. Dialogue: 0,0:00:33.33,0:00:37.08,Default,,0000,0000,0000,,Visual evidence includes the\Ngraphs, charts, tables, images, Dialogue: 0,0:00:37.08,0:00:40.53,Default,,0000,0000,0000,,and illustrations that\Nauthors use in their texts. Dialogue: 0,0:00:40.53,0:00:42.15,Default,,0000,0000,0000,,Authors include visual evidence Dialogue: 0,0:00:42.15,0:00:44.34,Default,,0000,0000,0000,,to help readers better understand ideas Dialogue: 0,0:00:44.34,0:00:47.37,Default,,0000,0000,0000,,because sometimes words just don't cut it. Dialogue: 0,0:00:47.37,0:00:50.31,Default,,0000,0000,0000,,Visual evidence can help\Nstrengthen a written argument Dialogue: 0,0:00:50.31,0:00:53.64,Default,,0000,0000,0000,,and help express complicated ideas. Dialogue: 0,0:00:53.64,0:00:56.31,Default,,0000,0000,0000,,So KOH, the potassium hydroxide, Dialogue: 0,0:00:56.31,0:00:59.67,Default,,0000,0000,0000,,makes up 13.4% by weight of the soap. Dialogue: 0,0:00:59.67,0:01:02.70,Default,,0000,0000,0000,,And sure it could list that\Npercentage on the label, Dialogue: 0,0:01:02.70,0:01:04.89,Default,,0000,0000,0000,,but to my eye, seeing the number Dialogue: 0,0:01:04.89,0:01:07.20,Default,,0000,0000,0000,,and the pie chart is more helpful. Dialogue: 0,0:01:07.20,0:01:08.40,Default,,0000,0000,0000,,I can see at a glance Dialogue: 0,0:01:08.40,0:01:10.92,Default,,0000,0000,0000,,that potassium hydroxide,\Nlabeled here in red, Dialogue: 0,0:01:10.92,0:01:13.59,Default,,0000,0000,0000,,only makes up a small part of my soap. Dialogue: 0,0:01:13.59,0:01:16.20,Default,,0000,0000,0000,,This is useful because if\Nthere were a lot more KOH Dialogue: 0,0:01:16.20,0:01:17.49,Default,,0000,0000,0000,,than there already is, Dialogue: 0,0:01:17.49,0:01:19.89,Default,,0000,0000,0000,,the soap would burn my\Nskin when I used it. Dialogue: 0,0:01:19.89,0:01:22.92,Default,,0000,0000,0000,,Soap chemistry, visual evidence at work. Dialogue: 0,0:01:22.92,0:01:26.55,Default,,0000,0000,0000,,Oftentimes, you will be asked\Nto evaluate visual evidence Dialogue: 0,0:01:26.55,0:01:28.02,Default,,0000,0000,0000,,to see whether it supports Dialogue: 0,0:01:28.02,0:01:30.33,Default,,0000,0000,0000,,or challenges an argument in a text. Dialogue: 0,0:01:30.33,0:01:32.70,Default,,0000,0000,0000,,This is something you'll\Nhave to do in many classes, Dialogue: 0,0:01:32.70,0:01:35.85,Default,,0000,0000,0000,,history and science\Nclasses as well as English. Dialogue: 0,0:01:35.85,0:01:38.34,Default,,0000,0000,0000,,And questions about this\Nparticular skill are common Dialogue: 0,0:01:38.34,0:01:40.11,Default,,0000,0000,0000,,on standardized exams. Dialogue: 0,0:01:40.11,0:01:42.54,Default,,0000,0000,0000,,So this brings us to vampires Dialogue: 0,0:01:42.54,0:01:46.08,Default,,0000,0000,0000,,and specifically a very\Ncomplicated idea about vampires Dialogue: 0,0:01:46.08,0:01:50.04,Default,,0000,0000,0000,,that some Norwegian researchers\Nwanted to test in 1994. Dialogue: 0,0:01:50.04,0:01:54.12,Default,,0000,0000,0000,,Does garlic scare vampires away? Dialogue: 0,0:01:54.12,0:01:55.35,Default,,0000,0000,0000,,This is a real study. Dialogue: 0,0:01:55.35,0:01:58.02,Default,,0000,0000,0000,,They said something like,\Naccording to folklore, Dialogue: 0,0:01:58.02,0:02:00.15,Default,,0000,0000,0000,,garlic repels vampires. Dialogue: 0,0:02:00.15,0:02:01.71,Default,,0000,0000,0000,,We wished to verify this, Dialogue: 0,0:02:01.71,0:02:05.94,Default,,0000,0000,0000,,but owing to the lack of\Nvampires, we used leeches instead. Dialogue: 0,0:02:05.94,0:02:09.21,Default,,0000,0000,0000,,Leeches, the real life\Nblood sucking worms. Dialogue: 0,0:02:09.21,0:02:12.21,Default,,0000,0000,0000,,So like vampires, kinda. Dialogue: 0,0:02:12.21,0:02:13.89,Default,,0000,0000,0000,,Based on the data, Dialogue: 0,0:02:13.89,0:02:16.95,Default,,0000,0000,0000,,does garlic actually keep vampires away? Dialogue: 0,0:02:16.95,0:02:20.45,Default,,0000,0000,0000,,Remembering that leches here\Nare our stand-ins for vampires. Dialogue: 0,0:02:20.45,0:02:22.83,Default,,0000,0000,0000,,In a research setting,\Nthe leches were presented Dialogue: 0,0:02:22.83,0:02:24.33,Default,,0000,0000,0000,,with a hand smeared with garlic Dialogue: 0,0:02:24.33,0:02:26.52,Default,,0000,0000,0000,,and a clean hand with the expectation Dialogue: 0,0:02:26.52,0:02:29.82,Default,,0000,0000,0000,,that they would attach\Nthemselves to one or the other. Dialogue: 0,0:02:29.82,0:02:32.46,Default,,0000,0000,0000,,From our data, we conclude\Nthat the relationship Dialogue: 0,0:02:32.46,0:02:35.67,Default,,0000,0000,0000,,between vampires and garlic is blank. Dialogue: 0,0:02:35.67,0:02:37.71,Default,,0000,0000,0000,,So here's the graph. Dialogue: 0,0:02:37.71,0:02:39.75,Default,,0000,0000,0000,,What conclusions can you make Dialogue: 0,0:02:39.75,0:02:41.52,Default,,0000,0000,0000,,about the traditional relationship Dialogue: 0,0:02:41.52,0:02:43.44,Default,,0000,0000,0000,,between garlic and vampires? Dialogue: 0,0:02:43.44,0:02:46.59,Default,,0000,0000,0000,,What does this graph say happens? Dialogue: 0,0:02:46.59,0:02:49.12,Default,,0000,0000,0000,,What does the visual evidence tell you? Dialogue: 0,0:02:49.12,0:02:51.27,Default,,0000,0000,0000,,I'm going to put a little music on. Dialogue: 0,0:02:51.27,0:02:53.73,Default,,0000,0000,0000,,Feel free to pause the video and discuss Dialogue: 0,0:02:53.73,0:02:55.38,Default,,0000,0000,0000,,or make your own guesses. Dialogue: 0,0:02:55.38,0:02:57.23,Default,,0000,0000,0000,,Alright, see you in a bit. Dialogue: 0,0:02:57.23,0:02:59.73,Default,,0000,0000,0000,,(soft music) Dialogue: 0,0:03:06.68,0:03:07.98,Default,,0000,0000,0000,,So the title of this graph is: Dialogue: 0,0:03:07.98,0:03:11.31,Default,,0000,0000,0000,,How Long Do Leeches Take to\NAttach Themselves to a Hand? Dialogue: 0,0:03:11.31,0:03:15.24,Default,,0000,0000,0000,,Right, and we have two bars\Non the horizontal axis, Dialogue: 0,0:03:15.24,0:03:16.17,Default,,0000,0000,0000,,the X axis. Dialogue: 0,0:03:16.17,0:03:19.44,Default,,0000,0000,0000,,One is with garlic, the\Nother is without garlic. Dialogue: 0,0:03:19.44,0:03:22.44,Default,,0000,0000,0000,,And over here on the Y\Naxis, the vertical axis, Dialogue: 0,0:03:22.44,0:03:24.84,Default,,0000,0000,0000,,we can see that the legend reads seconds. Dialogue: 0,0:03:24.84,0:03:27.42,Default,,0000,0000,0000,,That's how many seconds\Nthe leches took to attach. Dialogue: 0,0:03:27.42,0:03:28.89,Default,,0000,0000,0000,,This graph is potentially confusing Dialogue: 0,0:03:28.89,0:03:29.82,Default,,0000,0000,0000,,because it might seem Dialogue: 0,0:03:29.82,0:03:32.79,Default,,0000,0000,0000,,like the bigger bar is\Nthe better one, right? Dialogue: 0,0:03:32.79,0:03:34.80,Default,,0000,0000,0000,,But this is response time, Dialogue: 0,0:03:34.80,0:03:37.23,Default,,0000,0000,0000,,how long do they take? Dialogue: 0,0:03:37.23,0:03:42.23,Default,,0000,0000,0000,,So 14.9 seconds over here\Nversus 44.9 seconds over here. Dialogue: 0,0:03:42.63,0:03:43.98,Default,,0000,0000,0000,,The shorter the response time, Dialogue: 0,0:03:43.98,0:03:46.23,Default,,0000,0000,0000,,the faster the leach latches on. Dialogue: 0,0:03:46.23,0:03:48.12,Default,,0000,0000,0000,,What can we conclude from\Nthis study therefore, Dialogue: 0,0:03:48.12,0:03:51.51,Default,,0000,0000,0000,,what was the main conclusion of the study? Dialogue: 0,0:03:51.51,0:03:54.27,Default,,0000,0000,0000,,Well, basically the leeches went Dialogue: 0,0:03:54.27,0:03:58.38,Default,,0000,0000,0000,,for the garlic covered hand,\Nthe seasoned hand much faster, Dialogue: 0,0:03:58.38,0:04:00.63,Default,,0000,0000,0000,,30 seconds faster on\Naverage than they went Dialogue: 0,0:04:00.63,0:04:02.22,Default,,0000,0000,0000,,for the unseasoned hand. Dialogue: 0,0:04:02.22,0:04:04.86,Default,,0000,0000,0000,,That means they like\Nthe garlicky hand more Dialogue: 0,0:04:04.86,0:04:06.00,Default,,0000,0000,0000,,than the ungarlicky hand. Dialogue: 0,0:04:06.00,0:04:07.71,Default,,0000,0000,0000,,And remember, tradition holds Dialogue: 0,0:04:07.71,0:04:10.95,Default,,0000,0000,0000,,that garlic repels vampires,\Nit sends them away. Dialogue: 0,0:04:10.95,0:04:13.41,Default,,0000,0000,0000,,So from the result of this\Nstudy, we can conclude Dialogue: 0,0:04:13.41,0:04:18.41,Default,,0000,0000,0000,,that their tradition is wrong\Nand vampires love garlic, Dialogue: 0,0:04:18.60,0:04:22.20,Default,,0000,0000,0000,,if vampires and leeches are the same. Dialogue: 0,0:04:22.20,0:04:23.61,Default,,0000,0000,0000,,Yeah, it's a bit of a leap. Dialogue: 0,0:04:23.61,0:04:25.92,Default,,0000,0000,0000,,Maybe this particular case feels silly. Dialogue: 0,0:04:25.92,0:04:28.59,Default,,0000,0000,0000,,Fine, but this is a useful skill. Dialogue: 0,0:04:28.59,0:04:31.23,Default,,0000,0000,0000,,You will be asked to\Nevaluate visual evidence Dialogue: 0,0:04:31.23,0:04:32.64,Default,,0000,0000,0000,,to see whether it supports Dialogue: 0,0:04:32.64,0:04:35.16,Default,,0000,0000,0000,,or challenges an argument in a text. Dialogue: 0,0:04:35.16,0:04:37.02,Default,,0000,0000,0000,,A friend will send you an infographic Dialogue: 0,0:04:37.02,0:04:38.43,Default,,0000,0000,0000,,about a political topic. Dialogue: 0,0:04:38.43,0:04:40.62,Default,,0000,0000,0000,,You might look up stats\Nfor your favorite athlete. Dialogue: 0,0:04:40.62,0:04:42.63,Default,,0000,0000,0000,,You might have to puzzle\Nthrough a misleading graph Dialogue: 0,0:04:42.63,0:04:43.77,Default,,0000,0000,0000,,on TV news. Dialogue: 0,0:04:43.77,0:04:45.60,Default,,0000,0000,0000,,Understanding what data is trying Dialogue: 0,0:04:45.60,0:04:48.78,Default,,0000,0000,0000,,to tell us is a core reading skill. Dialogue: 0,0:04:48.78,0:04:52.29,Default,,0000,0000,0000,,Information, now it's got\Nnumbers in it, trademark. Dialogue: 0,0:04:52.29,0:04:54.18,Default,,0000,0000,0000,,And now you've got numbers in you. Dialogue: 0,0:04:54.18,0:04:55.01,Default,,0000,0000,0000,,Nice work. Dialogue: 0,0:04:55.01,0:04:57.99,Default,,0000,0000,0000,,Watch out for leeches.\NYou can learn anything. Dialogue: 0,0:04:57.99,0:04:58.82,Default,,0000,0000,0000,,David out.