0:00:12.246,0:00:18.855 [ Environment ] 0:00:20.890,0:00:25.840 "Let's take a look at old Siggy; Sigmund Freud, okay, who has definitely had his run. 0:00:26.000,0:00:30.470 He says behavior is influenced by parents, dreams, jokes, and sex; 0:00:30.470,0:00:35.000 not necessarily in that order. Okay, but, what does that say? 0:00:35.100,0:00:37.888 This Is the environment camp once again, right?!" 0:00:38.372,0:00:42.585 Many scientific researches have shown an obvious fact, 0:00:42.585,0:00:46.463 that the behavior of a human being is created by the environment. 0:00:46.780,0:00:51.952 If genes predispose a certain behaviour but the environment doesn't support it, 0:00:51.952,0:01:00.140 then that behaviour won't manifest, so in this case, genes aren't important. 0:01:04.697,0:01:06.466 "We live in a remarkable time 0:01:06.867,0:01:08.402 the age of genomics 0:01:10.137,0:01:12.806 Your genome is the entire sequence of your DNA 0:01:13.300,0:01:15.843 Your sequence and mine are slightly different. 0:01:16.700,0:01:18.545 That's why we look different. 0:01:18.645,0:01:20.080 I've got brown eyes 0:01:20.444,0:01:22.416 you might have blue, or gray; 0:01:22.716,0:01:24.251 but it's not just skin-deep. 0:01:24.585,0:01:26.119 The headlines tell us 0:01:26.520,0:01:29.223 that genes can give us scary diseases, 0:01:30.157,0:01:32.860 maybe even shape our personality, 0:01:33.066,0:01:34.661 or give us mental disorders. 0:01:35.850,0:01:37.464 Our genes seem to have 0:01:38.432,0:01:40.868 awesome power over our destinies; 0:01:42.750,0:01:45.706 And yet, I would like to think that 0:01:46.900,0:01:49.009 I am more than my genes. 0:01:58.100,0:01:59.887 Likewise, every connectome 0:02:00.400,0:02:02.100 changes over time. 0:02:03.500,0:02:05.325 What kind of changes happen? 0:02:05.350,0:02:06.400 Well, neurons, like trees, 0:02:06.450,0:02:08.228 can grew new branches, 0:02:08.650,0:02:10.597 and the can lose old ones. 0:02:12.475,0:02:14.568 Synapses can be created, 0:02:15.400,0:02:17.650 and the can be eliminated; 0:02:18.405,0:02:19.806 And synapses can grow larger, 0:02:20.200,0:02:21.808 and they can grow smaller. 0:02:23.300,0:02:24.700 Second question: 0:02:24.845,0:02:26.425 What causes these changes? 0:02:27.781,0:02:29.483 Well, it's true; 0:02:30.100,0:02:32.886 to some extent, they are programmed by your genes. 0:02:33.020,0:02:34.221 But that's not the whole story, 0:02:34.600,0:02:37.457 because there are signals: electrical signals, 0:02:37.575,0:02:39.393 that travel along the branches of neurons, 0:02:39.400,0:02:40.494 and chemical signals, 0:02:40.627,0:02:42.796 that jump across from branch to branch. 0:02:42.950,0:02:45.065 These signals are called neural activity. 0:02:46.200,0:02:47.467 And there's a lot of evidence 0:02:47.550,0:02:48.836 that neural activity 0:02:50.200,0:02:54.074 is encoding our thoughts, feelings, and perceptions, 0:02:54.200,0:02:55.400 our mental experiences. 0:02:56.476,0:02:58.378 And there's a lot of evidence that neural activity 0:02:58.900,0:03:01.415 can cause your connections to change. 0:03:02.500,0:03:04.100 And if you put those two facts together, 0:03:05.000,0:03:06.920 it means that your experiences 0:03:07.000,0:03:09.200 can change your connectome. 0:03:09.850,0:03:11.975 And that's why every connectome is unique, 0:03:12.125,0:03:14.650 even those of genetically identical twins. 0:03:15.863,0:03:18.765 The connectome is where nature meets nurture. 0:03:20.000,0:03:21.825 And it might be true 0:03:21.900,0:03:23.800 that just the mere act of thinking 0:03:23.900,0:03:25.999 can change your connectome; 0:03:26.250,0:03:28.550 an idea that you may find Empowering." 0:03:30.330,0:03:32.460 "Did you all hear that question about, 0:03:32.910,0:03:39.340 the issue about gender being socially created, versus being biological and hormonal? 0:03:39.520,0:03:42.500 Of course, I come down a bit more on the biological side, obviously, but.. 0:03:42.720,0:03:49.760 I now believe, having come full circle after studying biology for many years, 0:03:50.300,0:03:56.750 and really believing in the way, that the nature nurture debate, in a lot of ways, I think...is dead, 0:03:56.775,0:03:59.800 at this point, for the following reason: 0:04:00.000,0:04:01.800 The brain is very, very malleable; 0:04:02.200,0:04:06.900 We're all born with male or female predispositions, 0:04:06.925,0:04:10.450 and then we'll have hormones that increase that circuitry 0:04:10.455,0:04:12.850 for behavior, which is what a hormone is supposed to do. 0:04:12.855,0:04:17.800 A hormone's job is to make us predisposed to certain behaviors. 0:04:17.850,0:04:22.070 However, the way we're raised, for example, little boys: 0:04:22.920,0:04:27.150 Studies have shown that little boys who were told they're not supposed to touch something, 0:04:27.230,0:04:34.001 they often will grab it and touch it, whereas a little girl can be given a verbal demand not to touch it. 0:04:34.050,0:04:37.800 Little boys world-wide are punished more frequently, for, transgressions. 0:04:37.900,0:04:45.450 Little boys are told not to cry...that they're supposed to, 'Man-Up,' right? 0:04:45.475,0:04:51.250 Even at a young age, dads sometimes are very very scared if their little boy is... 0:04:51.300,0:04:54.650 any version of effeminate..behaviors. 0:04:54.825,0:04:58.500 For example, I remember flying coast to coast with a guy who sat next to me. 0:04:58.574,0:05:07.480 ..He said..his 18 year old son, when he saw his sister open a present, earlier that week; 0:05:07.575,0:05:09.800 It was a purse, she'd gotten a purse. 0:05:10.080,0:05:13.500 She was four years old. And he said, 'Oh, can I have a purse too?' 0:05:14.000,0:05:19.300 And he said he found himself, like someone had kicked him in the stomach, 0:05:19.325,0:05:24.590 and he just yelled at his eighteen month old son, 'No, boys don't have purses!' 0:05:24.860,0:05:31.300 And he was reporting to me this event..and he felt so ashamed and embarrassed afterwards; 0:05:31.499,0:05:38.570 because he realized that his little boy wasn't expressing anything..about being effeminate or not. 0:05:38.700,0:05:42.770 So, these things: the way we raise little boys, and we raise little girls, 0:05:42.800,0:05:48.900 Our brain circuits are so malleable. For example..we weren't born learning to play the piano, right? 0:05:48.901,0:05:50.720 You do practice, practice, practice. 0:05:50.990,0:05:55.080 You can retrain brain circuits, to do a variety of things. 0:05:55.170,0:06:01.300 And..all of our life, we are trained, gender trained, to be more one way or the other. 0:06:01.600,0:06:07.630 Males: facial expressions for example, when they measure them and put electrodes on them, 0:06:07.750,0:06:14.050 and show them a grizzly photograph that is supposed to make you cringe and emotional, 0:06:14.100,0:06:20.460 their facial expressions, versus females, actually showed More emotional response 0:06:20.465,0:06:26.890 in the time Before it becomes conscious. (Then) right After the one second level when it becomes conscious, 0:06:26.900,0:06:33.000 they start to freeze down, their facial muscles, for frowning or smiling; 0:06:33.025,0:06:37.110 in females, facial muscles actually Amplify, and the males' go down. 0:06:37.145,0:06:43.150 Scientists believe, the hypothesis is, that the males have been trained to suppress, an emotional feeling. 0:06:43.200,0:06:48.200 So, thanks for the question; it's..a moving target for a lot of our lives. 0:06:48.230,0:06:52.650 And the ways we're raised, and what we're allowed to do, what boys are (and are not) allowed to do, 0:06:52.650,0:06:56.750 has a lot to do with how they grow up to be men." 0:06:57.727,0:07:01.419 Think about the way you act, your facial expression, 0:07:01.721,0:07:05.761 the values accepted by you, the way you talk, everything, 0:07:06.063,0:07:09.267 and remember that they are a result of your environment. 0:07:09.267,0:07:14.469 The human brain has no mechanism to recognise what is relevant or not. 0:07:19.770,0:07:24.200 CHANTING starts to emanate from background, then intensifies. 0:08:52.800,0:08:59.710 CHANTING fades, and light ♪orchestral♫ MUSIC begins. 0:09:27.710,0:09:29.934 [ I’m painting myself, 0:09:30.800,0:09:33.500 because I want to win a girl. ] 0:09:37.230,0:09:43.400 ♪orchestral♫ MUSIC continues, no voices. 0:10:57.705,0:10:59.934 [ That guy’s really handsome. ] 0:12:32.605,0:12:36.523 [ When we drink blood, it makes us tough. ] 0:14:33.233,0:14:37.678 [ Tribe meets a white man for the first time... ] 0:18:15.380,0:18:20.580 ♪orchestral♫ MUSIC slightly fades. 0:18:21.996,0:18:27.140 There is no such thing as: bad, criminal, lazy, 0:18:27.441,0:18:32.189 brilliant people, thieves, or racists. 0:18:32.654,0:18:35.672 Only people predisposed to such behavior; 0:18:36.160,0:18:39.039 but if the environment doesn't trigger them, 0:18:39.039,0:18:41.547 the behaviour never manifests. 0:18:51.000,0:18:52.600 Remember: 0:18:52.799,0:18:57.704 the human brain has no mechanism to recognise what is relevant or not. 0:19:03.680,0:19:08.370 ♪orchestral♫ MUSIC resumes. 0:19:57.523,0:20:01.052 The most extreme case is represented by feral Children. 0:20:01.268,0:20:05.557 A feral child is a human child who has lived isolated 0:20:05.557,0:20:08.976 from human contact from a very young age, 0:20:08.976,0:20:12.801 and has no (or little) experience of human care, 0:20:12.801,0:20:18.305 loving or social behavior, and, crucially, of human language. 0:20:18.514,0:20:21.718 Feral children lack the basic social skills 0:20:21.718,0:20:25.392 which are normally learned in the process of enculturation. 0:20:25.392,0:20:29.984 For example, they may be unable to learn to use a toilet, 0:20:29.984,0:20:32.817 have trouble learning to walk upright 0:20:32.817,0:20:37.624 and display a complete lack of interest in human activity around them. 0:20:43.820,0:20:47.100 'Oxana Malaya began her life living with dogs, 0:20:47.400,0:20:51.200 rejected by her mother and father, she somehow survived for six years, 0:20:51.250,0:20:53.970 living wild, before being taken into care. 0:20:54.100,0:20:57.500 There are few cases of feral children who've been able to fully compensate 0:20:57.550,0:20:58.980 for the neglect they've suffered. 0:20:58.990,0:21:00.590 Oxana is now 22, 0:21:00.600,0:21:03.100 but her future still hangs in the balance. 0:21:03.210,0:21:07.720 Have scientists learned enough from previous cases to rehabilitate? 0:21:07.800,0:21:13.300 For six years, Oxana Malaya spent her life, living in a kennel, with dogs. 0:21:14.360,0:21:16.890 Totally abandoned by her mother and father, 0:21:16.950,0:21:19.510 she was discovered, behaving more like an animal, 0:21:19.600,0:21:22.000 than a human child. 0:21:22.180,0:21:26.500 For two centuries, wild children have been the object of fascinating study. 0:21:26.600,0:21:29.000 Raised without love, or social interaction, 0:21:29.240,0:21:31.910 wild (or feral) children pose the question: 0:21:32.000,0:21:34.050 What is it that makes us human? 0:21:34.100,0:21:36.930 Oxana was born in November, 1983.' 0:21:37.999,0:21:39.870 (female voice) 0:21:39.970,0:21:45.340 "When the baby girl was born, she weighed 5 lbs., 11 ounces, and didn't have Any abnormalities." 0:22:02.005,0:22:05.976 Genie had spent 13 years, isolated, 0:22:05.976,0:22:09.963 in a nearly empty room, devoid of any social contact. 0:22:10.464,0:22:14.288 Although, not suffering from any mental illness, 0:22:14.660,0:22:19.239 because of that environment, she behaved like a mentally ill person. 0:22:19.606,0:22:22.576 She could not create social connections, 0:22:22.576,0:22:27.872 she could not speak; even her walking was strange. 0:22:29.149,0:22:33.587 After a while, due to the insistence of others to rehabilitate her, 0:22:34.048,0:22:36.951 Genie began to express herself through sign language 0:22:36.951,0:22:38.809 and socialize with people. 0:22:42.340,0:22:45.430 'They also took responsibility for Genie's therapy, 0:22:45.780,0:22:49.200 attempts to help her grapple with the horror of her childhood.' 0:22:49.300,0:22:51.490 "Okay baby, open your mouth!" 0:22:51.750,0:22:54.250 'In this primitive role playing exercise, 0:22:54.300,0:22:56.550 Marilyn pretends to be Genie's mother.' 0:22:56.600,0:23:01.010 "Hurry up! Hurry up, because there isn't any time. 0:23:01.050,0:23:03.280 Father's going to be angry." 0:23:03.850,0:23:07.500 'Marilyn tries to ellicit memories of Genie's past.' 0:23:08.420,0:23:13.430 (Marilyn) "I wonder what you're thinking." (Genie) UNCLEAR RESPONSE. 0:23:25.690,0:23:29.591 Genie is the extreme evidence of environmental influence. 0:23:36.703,0:23:38.720 'Despite all she'd been through, Genie's troubles were not over. 0:23:40.413,0:23:44.405 In her first foster home, Genie was severely punished for vomiting. 0:23:45.343,0:23:51.030 The experience was so traumatizing, Genie ended up back in children's hospital, 0:23:51.030,0:23:54.614 where the Rigler's offered assistance.' 0:23:55.968,0:23:58.308 "You couldn't help it." 0:24:00.477,0:24:05.258 "So now you're keeping you're mouth closed so you won't vomit." 0:24:05.581,0:24:08.089 'Genie was afraid to open her mouth. 0:24:28.676,0:24:29.176 If you do not expose a human being to murder, 0:24:29.521,0:24:32.493 rape, pedophilia, zoophilia, necrophilia, weapons, racism, 0:24:32.493,0:24:35.024 then he will not know what they are. 0:24:35.024,0:24:36.610 It's like trying to imagine 0:24:36.610,0:24:39.134 a color you’ve never seen before.