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All of Human Psychology Explained in 20 Minutes — Transcript

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0:00Hi, you're a human. You have a brain.
0:02And that brain is lying to you right
0:03now. It's lying about what you saw 5
0:05minutes ago. It's lying about why you
0:07made that decision yesterday. It's lying
0:09about who you are as a person. And the
0:11craziest part, you believe every word of
0:13it. Psychology is the study of the mind
0:15and behavior. It's basically the
0:17instruction manual for being human that
0:19nobody gave you. And today, we're going
0:21to speedrun the entire thing. This is
0:22everything we know about why you think,
0:24feel, and act the way you do. Buckle up.
0:27The brain basics. Let's start with the
0:28hardware. Your brain has about 86
0:31billion neurons. These are cells that
0:32send electrical signals to each other.
0:34When you think, feel, or move, neurons
0:36are firing. Right now, reading this,
0:38millions of them are lighting up like a
0:39Christmas tree having a seizure. Neurons
0:41communicate through synapses, tiny gaps
0:44where they pass chemical messages called
0:45neurotransmitters. You've heard of some
0:47of these. Dopamine is the one everyone
0:49thinks is about pleasure, but it's
0:50actually about wanting and motivation.
0:52Serotonin helps regulate mood, sleep,
0:55and appetite. Cortisol is your stress
0:57hormone, useful in emergencies, but
0:59destructive when it's always elevated.
1:01Adrenaline kicks in when you're about to
1:02fight someone or run away from a bear.
1:04GABA calms everything down. Glutamate
1:06speeds everything up. These chemicals
1:08basically run your life. Too much of
1:10one, not enough of another, and suddenly
1:12you're anxious, depressed, manic, or
1:14convinced that everyone is looking at
1:15you weird. Mental health is partly brain
1:18chemistry, which is why medication
1:19sometimes helps. Your brain also has
1:21specialized regions. The prefrontal
1:23cortex, right behind your forehead,
1:25handles planning, decision-making, and
1:26impulse control. It's the last part to
1:28fully develop, which is why teenagers do
1:30stupid things. It's not fully online
1:32until about age 25. The amygdala
1:34processes fear and emotional memory. The
1:36hippocampus handles forming new
1:37memories, which is why damage to it
1:39causes amnesia. The brainstem controls
1:41basic survival functions like breathing
1:43and heart rate. You're not consciously
1:45running these systems. They run you.
1:47Now, here's the uncomfortable part. Your
1:48brain has two main modes, conscious and
1:51unconscious. The conscious mind is the
1:52part you think is you. It's the voice in
1:54your head reading this right now. It
1:56likes to think it's in charge. It's not.
1:59About 95% of what you do is automatic.
2:01Your unconscious mind handles breathing,
2:03digestion, walking, and most of your
2:05decisions. The conscious mind is more
2:06like a press secretary that makes up
2:08reasons for what the unconscious already
2:10decided. You chose that job, that
2:12partner, that sandwich, and then your
2:13brain invented a logical story to
2:15explain why. Studies show that brain
2:17activity predicting a decision happens
2:18several seconds before you consciously
2:20decide. The feeling of choosing might be
2:22an illusion. This is going to be a
2:24theme.
2:25How you develop. Let's talk about how
2:26you became you. There's this old debate
2:28called nature versus nurture. Are you
2:30the product of your genes or your
2:32environment? The answer is yes. It's
2:34both. Always both. Your genes load the
2:36gun, your environment pulls the trigger.
2:38You might be genetically predisposed to
2:39anxiety, but whether it actually
2:41develops depends on your childhood, your
2:43trauma, your stress levels, and whether
2:45your parents were emotionally available
2:47or just physically present. Speaking of
2:48parents, let's talk about attachment. In
2:50the first few years of life, you form an
2:52attachment style with your primary
2:53caregiver. This blueprint affects every
2:56relationship you'll ever have. Secure
2:58attachment means your caregiver was
2:59consistent and responsive. When you
3:01cried, they came. When you needed
3:03comfort, they provided it. You grew up
3:05feeling safe, trusting that people will
3:06be there for you. You can handle
3:08intimacy without freaking out.
3:09Congratulations, you won the childhood
3:11lottery. Anxious attachment means your
3:13caregiver was inconsistent. Sometimes
3:15they were there, sometimes they weren't.
3:17You could never predict which version
3:18you'd get. Now you crave closeness, but
3:21constantly fear abandonment. You're the
3:23one sending you okay text when someone
3:24takes too long to reply. You read into
3:26everything. Silence feels like
3:28rejection. Avoidant attachment means
3:30your caregiver was emotionally
3:31unavailable. Maybe they were physically
3:33present, but checked out. You learn to
3:35self-soothe because no one else was
3:37going to. Now you're uncomfortable with
3:39intimacy and keep people at arm's
3:40length. You pride yourself on not
3:42needing anyone. You're the one who
3:43leaves before things get too serious.
3:46There's also disorganized attachment,
3:47which happens with abuse or neglect. The
3:49person who's supposed to protect you is
3:51also the source of danger. You want
3:53closeness and fear at the same time.
3:55This one's the hardest to untangle.
3:57Here's what matters, though. These are
3:58patterns, not destiny. Neuroplasticity
4:01means your brain can change at any age.
4:03New experiences create new neural
4:04pathways. Therapy works because it
4:06literally rewires your brain. The
4:08patterns you learned as a kid are
4:09strong, but they're not permanent. You
4:11are not doomed to repeat your childhood
4:13forever. Probably. Perception and
4:15senses. Here's something that'll mess
4:17with you. You don't experience reality,
4:19you experience a simulation of reality
4:21constructed by your brain. Light hits
4:23your eyes, sound waves hit your ears,
4:25chemicals hit your tongue and nose,
4:27pressure hits your skin, and your brain
4:29takes all that raw data and builds a
4:30model of the world. But, it's not a
4:32recording. It's an interpretation. Your
4:34brain is constantly guessing, filling in
4:36gaps, predicting what comes next, and
4:38making assumptions based on past
4:39experience. You have a blind spot in
4:42each eye where the optic nerve connects.
4:44You don't see black holes in your vision
4:45because your brain fills them in. It's
4:47making up visual information and
4:48seamlessly blending it with the real
4:50data. Optical illusions prove this. Your
4:52brain sees two lines and guesses one is
4:54longer based on context cues. It sees a
4:56dress and guesses it's blue in shadow or
4:58golden sunlight, or both simultaneously,
5:01which started a civil war on the
5:02internet that I'm still not over. Your
5:04brain also filters information
5:05ruthlessly. Right now, you're ignoring
5:07the feeling of your clothes on your
5:09skin, the ambient sounds around you, the
5:11slight pressure of sitting. You weren't
5:12paying attention to any of that until I
5:14mentioned it. Your brain decided it
5:16wasn't relevant and screened it out.
5:18That's selective attention. There's a
5:19famous experiment called the invisible
5:21gorilla. People watch a video of others
5:23passing a basketball. They're told to
5:25count the passes. Halfway through, a
5:27person in a gorilla suit walks through
5:28the scene, beats their chest, and
5:30leaves. About half the people don't see
5:31the gorilla at all. They were so focused
5:33on counting that their brain filtered
5:35out a literal gorilla. This is why
5:37eyewitness testimony is unreliable. Your
5:39brain doesn't record events like a
5:40camera. It constructs memories based on
5:42attention, expectation, and whatever
5:45narrative makes sense at the time. And
5:47it does this with complete confidence,
5:48even when it's completely wrong. People
5:50have gone to prison based on eyewitness
5:52testimony that was later proven false by
5:53DNA evidence. Memory. Speaking of
5:56memory, let's talk about how it actually
5:58works. Spoiler, badly. You have
6:00different memory systems. Sensory memory
6:02holds information for milliseconds like
6:04the afterimage when you close your eyes.
6:06Short-term memory holds about seven
6:07items for about 20 seconds. It's like
6:09RAM in a computer. Long-term memory is
6:11more like a hard drive. Vast storage for
6:14facts, experiences, and skills. Stuff
6:16gets encoded from short-term to
6:17long-term through repetition, emotional
6:20intensity, or connecting it to things
6:22you already know. That's why studying
6:23works better when you relate new
6:24information to existing knowledge.
6:27That's why traumatic memories are so
6:28sticky.
6:29But here's the thing. Every time you
6:31remember something, you're not playing
6:32back a recording. You're reconstructing
6:34the memory from scratch using fragments
6:37stored across different brain regions.
6:38And every reconstruction changes it
6:40slightly. The act of remembering alters
6:42the memory. Memories are like a game of
6:44telephone you play with yourself over
6:46years. You forget things for two main
6:48reasons. Decay means the memory fades
6:50over time if you don't access it.
6:51Interference means new information
6:53overwrites old information or old
6:55information blocks new stuff from
6:57sticking. This is why cramming doesn't
6:59work for long-term retention. False
7:00memories are terrifyingly easy to
7:02create. Researchers have convinced
7:04people they got lost in a mall as a
7:05child, that they met Bugs Bunny at
7:07Disneyland, which is impossible because
7:09Bugs Bunny is a Warner Brothers
7:11character, that they committed crimes
7:12they never committed. All it takes is
7:14suggestion, repetition, and imagination.
7:17Your brain can't reliably distinguish
7:19between a real memory and a vivid false
7:20one. The feeling of certainty means
7:22nothing. Traumatic memory works
7:24differently. Stress hormones during
7:26trauma enhance memory consolidation.
7:28That's why you remember where you were
7:29during major events, but can't remember
7:31what you had for lunch last Tuesday. But
7:33trauma memories can also get fragmented
7:35causing flashbacks instead of ordered
7:36narratives. Want to actually remember
7:38things? Space your practice over time
7:40instead of cramming. Test yourself
7:42instead of just rereading. Sleep,
7:44because your brain consolidates memories
7:45during sleep. Pull an all-nighter before
7:47a test and you're basically sabotaging
7:49yourself.
7:50Learning and conditioning. Every
7:52behavior you have was learned somehow.
7:54Psychology has identified a few main
7:55ways this happens. Classical
7:57conditioning is Pavlov's dog. Ivan
7:59Pavlov was studying digestion when he
8:01noticed his dog started salivating
8:03before food arrived, just from hearing
8:05the footsteps. So, he rang a bell before
8:06feeding the dogs. Eventually, the dogs
8:08salivated just from hearing the bell
8:10even without food. They associated the
8:12bell with the food. This happens to you
8:14constantly. The sound of your phone
8:15notification triggers a little dopamine
8:17anticipation because you've associated
8:19it with messages. The smell of a certain
8:21perfume makes you think of an ex. A song
8:23brings back a specific memory. This is
8:25also how phobias develop. One bad
8:27experience with a dog and suddenly all
8:29dogs trigger fear. Operant conditioning
8:32is about consequences. Behavior that
8:34gets rewarded increases. Behavior that
8:36gets punished decreases. B.F. Skinner
8:38put rats in boxes with levers. Press the
8:41lever, get food. The rats pressed the
8:43lever a lot, but timing matters.
8:45Immediate rewards work better than
8:47delayed ones, which is why it's so hard
8:48to diet or save money. The pleasure of
8:50eating now beats the distant benefit of
8:52being healthy later. Variable rewards,
8:54where you don't know when you'll get
8:55rewarded, are the most addictive. That's
8:57slot machines. That's social media
8:59feeds. Maybe this scroll will have
9:01something good. Maybe the next one.
9:03Maybe the next one. The unpredictability
9:05keeps you hooked. Habits form when
9:07behaviors become automatic. You do
9:09something, you get a reward, and
9:10eventually your brain creates a neural
9:12shortcut. The basal ganglia takes over
9:14so you don't have to consciously think
9:15about it. That's why you can drive home
9:17on autopilot. It's also why bad habits
9:19are so hard to break. The neural pathway
9:22is already paved. Willpower is trying to
9:24override an automatic process, which is
9:26exhausting. To break a habit, you need
9:28to identify the cue that triggers it.
9:30Replace the routine with a different
9:31behavior and keep the reward. Want to
9:33stop stress eating? Notice when you
9:35reach for snacks, the cue is stress.
9:37Replace eating with something else that
9:39provides comfort and repeat until the
9:41new pathway is stronger than the old
9:42one. Observational learning is copying
9:45others. Albert Bandura showed this with
9:46the Bobo doll experiment. Kids watched
9:48adults beat up an inflatable clown doll,
9:50then did the same thing when left alone
9:51with it. We learn aggression, kindness,
9:53skills, and fears by watching other
9:55people. This is why your parents'
9:56behavior shaped you more than their
9:58lectures. Emotions. You feel things.
10:01Sometimes too much, sometimes not
10:03enough, sometimes about the wrong things
10:05at the wrong times. Let's talk about
10:07why. Most researchers agree on about six
10:09basic emotions that appear across all
10:11cultures: fear, anger, joy, sadness,
10:14disgust, and surprise. Babies display
10:16them before they learn language. They're
10:18probably hardwired, the product of
10:19evolution. Fear keeps you alive, anger
10:22protects your boundaries, disgust keeps
10:24you from eating poison, joy reinforces
10:26good things. An emotion is a quick,
10:27automatic, physiological response. You
10:30see a snake, you feel fear. It happens
10:32in milliseconds, before you even
10:34consciously process what you're seeing.
10:35A feeling is your conscious
10:36interpretation of that emotion. A mood
10:38is a longer-lasting state that doesn't
10:40need a specific trigger. You can be in
10:42an irritable mood all day without
10:43knowing why. The amygdala is your
10:45brain's alarm system. It triggers fight
10:47or flight before your rational
10:48prefrontal cortex even knows what's
10:50happening. This is great for escaping
10:52predators. It's less great when your
10:53amygdala decides a work email is a
10:55predator and floods you with cortisol.
10:57The amygdala doesn't know it's 2026.
10:59It's still looking for tigers. Some
11:01people are better at emotional
11:02regulation than others. This is partly
11:04temperament. You're born more or less
11:06reactive, and partly learned. If your
11:08caregivers helped you process emotions
11:10as a kid, you probably have better
11:12skills. If they told you to stop crying,
11:14you probably struggle more. Emotional
11:16intelligence is the ability to
11:17recognize, understand, and manage
11:19emotions, both yours and other people's.
11:21It predicts success better than IQ in
11:23many domains, especially leadership in
11:25relationships. You can be brilliant and
11:27still ruin every relationship because
11:29you don't know how to handle feelings.
11:31Motivation and needs. Why you do
11:33anything? Motivation, Abraham Maslow
11:35said humans have a hierarchy of needs.
11:37At the bottom, physiological needs like
11:40food, water, shelter, then safety, then
11:43love and belonging, then esteem.
11:45Finally, self-actualization, becoming
11:47your best self. The idea is you can't
11:49focus on higher needs until lower ones
11:51are met. Hard to worry about
11:52self-actualization when you're starving.
11:54This framework is simplified, more a
11:56useful model than a proven theory, but
11:58it captures something real. Motivation
12:00comes in two flavors. Extrinsic
12:02motivation is doing things for external
12:03rewards, money, grades, praise.
12:06Intrinsic motivation is doing things
12:07because they're inherently satisfying.
12:09Research consistently shows intrinsic
12:11motivation is more powerful and
12:13sustainable. Now, dopamine. Everyone
12:15says dopamine is the pleasure chemical.
12:17This is wrong. Dopamine is about
12:19wanting, not liking. It's the
12:21anticipation of reward, not the
12:22enjoyment of it. It drives you to pursue
12:24things. Once you get them, a different
12:26system handles the pleasure. This is why
12:28scrolling social media feels compulsive
12:30but not satisfying. Dopamine is
12:32screaming more, more, more, while you
12:34feel empty. Each scroll triggers
12:35anticipation, the reward rarely matches
12:37it. So, you keep scrolling chasing a
12:39payoff that never quite arrives.
12:40Willpower is real but limited.
12:42Self-control depletes over the course of
12:44the day. That's why you make bad choices
12:46at night. That's why diets fail after a
12:48stressful day. Willpower is a muscle
12:50that gets tired. Here's a paradox. Too
12:52much reward can kill motivation. If you
12:54pay someone for something they already
12:55enjoyed doing for free, they might enjoy
12:57it less afterward. The extrinsic reward
13:00crowds out the intrinsic motivation.
13:02Personality. Personality is your
13:04consistent patterns of thinking,
13:06feeling, and behaving across situations
13:08and over time. It's what makes you
13:09recognizably you. The most
13:11scientifically supported model is the
13:13big five, openness, conscientiousness,
13:15extraversion, agreeableness, and
13:16neuroticism. Everyone falls somewhere on
13:19each spectrum. There's no good or bad
13:21personality, just different profiles
13:22with different tradeoffs. High
13:24conscientiousness predicts career
13:25success but also rigidity. High
13:28agreeableness makes you likable but
13:29maybe a pushover.
13:31Where does personality come from? About
13:3350% genetics, 50% environment roughly
13:35speaking. Identical twins raised apart
13:37have strikingly similar personalities,
13:40but your experiences also shape you.
13:41Birth order, culture, major life events,
13:44even random chance plays a role.
13:45Personality can change over time,
13:47especially during your 20s when the
13:49brain is still developing. People
13:50generally become more conscientious,
13:52more agreeable, and less neurotic as
13:54they age. This is called personality
13:56maturation. You probably won't be
13:57exactly who you are now in 10 years.
13:59That's either terrifying or liberating,
14:01depending on how you feel about who you
14:03are now. When personality traits become
14:05extreme and cause significant problems,
14:07we call them personality disorders.
14:09Narcissistic, borderline, antisocial,
14:11these aren't just being a lot. They
14:13seriously damage lives and
14:14relationships. A note on personality
14:16tests. The Big Five has scientific
14:18support. It's reliable and valid.
14:20Myers-Briggs does not. MBTI is basically
14:23astrology for people who think they're
14:24too smart for astrology.
14:26Social psychology. You are not an
14:28isolated individual making rational
14:29choices in a vacuum. You're a social
14:31animal constantly influenced by other
14:33people. Solomon Asch ran a famous
14:35conformity experiment in the 1950s.
14:38Participants sat in a room with others
14:39who were secretly confederates, actors
14:41working with the researcher. They looked
14:43at lines and said which one matched the
14:44target line. Easy task, obvious answer.
14:47But when all the confederates gave the
14:48wrong answer, about 75% of participants
14:51conformed at least once. They denied
14:53what their own eyes told them just to
14:54fit in with the group.
14:56Why? Some genuinely doubted their
14:58perception. If everyone else sees
14:59something different, maybe I'm wrong.
15:01Others knew they were right but didn't
15:02want to stand out. Social pressure is
15:04that powerful. Stanley Milgram's
15:06obedience experiment was darker.
15:08Participants thought they were
15:09administering electric shocks to a
15:10learner. About 65% went all the way to
15:13the maximum 450 volts, even while
15:15visibly distressed, sweating, trembling.
15:17When the experimenter calmly insisted
15:19they continue, most people obeyed.
15:21Authority is that powerful. This
15:22experiment was inspired by trying to
15:24understand how ordinary Germans
15:26participated in the Holocaust. The
15:27bystander effect says the more people
15:30present during an emergency, the less
15:31likely anyone helps. Everyone assumes
15:33someone else will. If you ever need help
15:35in a crowd, point at one specific person
15:37and say, "You in the red shirt, call
15:39911." Everyone nods along, dissent is
15:42suppressed, and they make terrible
15:43decisions together. The Bay of Pigs
15:45invasion, the Challenger disaster, many
15:47failures follow this pattern. We divide
15:49the world into in groups and out groups
15:50automatically. People in your group are
15:52individuals with complex inner lives.
15:54People outside are stereotypes. This is
15:57the foundation of prejudice. Your brain
15:59categorizes people instantly based on
16:01appearance, and those categories come
16:03loaded with associations and assumptions
16:04you didn't consciously choose. First
16:07impressions happen in milliseconds and
16:08are remarkably hard to change. A halo
16:10effect means if we like one thing about
16:12someone, attractive, competent, similar
16:14to us, we assume other good things.
16:17Attractive people are assumed to be
16:18smarter, kinder, and more trustworthy.
16:20Studies show they even get lighter
16:22prison sentences. Cognitive biases, your
16:25brain is not a logic machine, it's a
16:27shortcut machine. And shortcuts come
16:28with systematic errors. Confirmation
16:31bias is the big one. You seek out
16:32information confirming what you already
16:34believe and dismiss information that
16:36challenges it. You evaluate evidence
16:37like a lawyer defending your existing
16:39position. You're not objective. Neither
16:41am I. Neither is anyone. Availability
16:43heuristic means you judge likelihood by
16:45how easily examples come to mind. Shark
16:47attacks seem common because they're
16:48dramatic. You're more likely to be
16:50killed by a cow than a shark. But cow
16:52attacks don't make the news. Anchoring
16:54means the first number you hear affects
16:56all subsequent judgments. If I say a car
16:58costs $50,000, then tell you it's on
17:00sale for $35,000,
17:02you feel like you're getting a deal.
17:04Salespeople know this. The
17:05Dunning-Kruger effect says people with
17:07low ability overestimate themselves,
17:09while people with high ability
17:10underestimate. Beginners are
17:11overconfident, experts are humble. Sunk
17:14cost fallacy is continuing something
17:16because you've already invested, even
17:17when quitting would be smarter. You stay
17:19in a bad relationship because you've
17:20already given it 3 years. The investment
17:23is gone regardless, but your brain can't
17:25let go. Loss aversion means losses hurt
17:27roughly twice as much as equivalent
17:29gains feel good. Losing $20 feels worse
17:31than finding $20 feels good. There are
17:34over 180 documented cognitive biases.
17:37The scariest part, knowing about biases
17:39doesn't make you immune to them. Mental
17:41health. Let's talk about when things go
17:43wrong. About half of people will
17:45experience a mental health condition at
17:46some point. This is not rare. This is
17:49the human condition. Anxiety disorders
17:51are fear responses that won't shut off.
17:53Generalized anxiety is constant worry
17:55about everything. Panic disorder
17:57involves sudden attacks so severe people
17:58think they're having heart attacks.
18:00Social anxiety is fear of judgment.
18:02Specific phobias are irrational fears of
18:04particular things. About 30% of people
18:06will have an anxiety disorder at some
18:08point. Depression isn't just sadness,
18:10it's anhedonia, the inability to feel
18:12pleasure in things you used to enjoy.
18:14Persistent feelings of worthlessness,
18:16helplessness, exhaustion. It's not
18:18laziness or weakness, it's a brain state
18:20involving changes in neurotransmitters
18:22and brain structure. PTSD happens when
18:24trauma gets stuck. The brain keeps
18:26reliving the event through triggers and
18:28flashbacks. It's not about being weak,
18:30it's about the brain's normal response
18:31to abnormal events.
18:33Other conditions. OCD involves intrusive
18:36thoughts plus compulsive behaviors to
18:38neutralize anxiety. ADHD is attention
18:41dysregulation. The brain struggles to
18:43control where focus goes.
18:44Bipolar disorder involves cycles between
18:46depression and mania. Schizophrenia
18:48involves psychosis, breaks from shared
18:50reality.
18:51Here's the important thing. Mental
18:53health exists on a spectrum. Everyone
18:55experiences anxiety sometimes. Everyone
18:57feels depressed occasionally. Disorders
18:59are when these become persistent,
19:01severe, and significantly impair
19:02functioning. Treatment works. Therapy,
19:05especially cognitive behavioral therapy,
19:07changes thinking patterns and behaviors
19:09and has has effects even after treatment
19:11ends. Medication adjust brain chemistry
19:14and can be life-saving. Often the
19:15combination works best. The stigma
19:17around mental health has killed more
19:19people than the disorders themselves by
19:21keeping people from seeking help.
19:22Getting treatment is not weakness. It's
19:24maintenance for the most complex organ
19:26in your body.
19:27So what have we learned? You're not as
19:29rational as you think. Your brain lies,
19:31cheats, and takes shortcuts constantly.
19:33You don't perceive reality directly. You
19:35perceive a constructed model that's
19:37often wrong. Your memories are
19:38unreliable reconstructions. Your
19:40decisions are influenced by unconscious
19:42forces. You're vulnerable to social
19:44pressure, cognitive biases, and
19:46emotional hijacking. Your personality
19:48was shaped by genes and experiences you
19:50didn't choose. Your attachment patterns
19:52echo through every relationship. Your
19:54habits run on autopilot while your
19:56conscious mind makes up stories about
19:57being in control. But knowing this is
19:59power. Understanding psychology means
20:02understanding yourself. It means
20:03recognizing when your brain is tricking
20:05you. It means catching cognitive biases
20:07before they ruin your judgment. It means
20:09having compassion for yourself and
20:10others because we're all running on the
20:12same buggy software. The brain is the
20:14most complex object in the known
20:15universe. 86 billion neurons, 100
20:18trillion connections. It creates
20:20consciousness, whatever that is. It
20:22creates you. And it's running you right
20:24now mostly without your permission. This
20:26is psychology, the manual for being
20:28human. Nobody gave it to you at birth,
20:29but now you have it. Okay, this took way
20:31too long to research and I need a nap.
20:33If you learned something, hit the like
20:35button. If you want a part two going
20:36deeper on any of these topics, let me
20:38know in the comments because I have
20:40about 400 more pages of notes that
20:41didn't make the cut.

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