Why Do Smart People Believe Stupid Things

Added: 2026-05-11

[00:00:03]You've got that one friend, right? The one who graduated top of their class, has a master's in engineering, and can explain the geopolitical nuances of the Levant over brunch. But then, without a hint of irony, tells you they're alkalizing their blood with lemon water to prevent cancer.

[00:00:21]Or maybe it's the tech bro who won't make a hire without checking the candidate's human design chart.

[00:00:27]It's the great paradox of our species.

[00:00:29]Why do people with stratospheric IQs believe things that are, frankly, just plain stupid? We like to think of smartness as a shield, a force field that deflects nonsense. But here's the uncomfortable truth. Being clever doesn't make you immune to BS. In fact, it might actually make you better at it.

[00:00:51]I'm Amanda Speaks, and today we're tearing apart the mechanics of the smart-stupid pipeline. We're using Ben Goldacre's seminal book, Bad Science, to figure out how our brains, these 3-lb lumps of gray matter designed to help apes survive on the savanna, routinely talk us into some pretty ridiculous ideas. Grab a drink. Let's talk about why your brain is actively trying to lie to you.

[00:01:17]Goldacre's central thesis is that we are biologically primed to find order in chaos. Evolutionarily speaking, this was a massive win. If you're a caveman and you hear a rustle in the grass and you think, "Hey, every time I hear that specific rustle, a saber-toothed cat tries to eat my face," you survived. You found a pattern, you lived. The guy who thought, "Eh, it's probably just statistical noise," got removed from the gene pool before he could pass on his nuanced genetics.

[00:01:48]The problem is that we haven't switched that setting off. We are hardwired to find meaning in randomness, even when there's absolutely none.

[00:01:56]In Goldacre's picture, talks about the Texas sharpshooter fallacy. Imagine a guy who fires a gun at the side of a barn, then he walks up to the barn and draws a bull's-eye around the cluster of bullet holes. He looks like a pro, right? But he cheated. He found the pattern after the data was already on the wall.

[00:02:16]This is how smart people get sucked into things like stock market signals or lucky streaks. We look at a mess of random data, find a little clump that looks interesting, and invent a story to explain it. Clever people are especially dangerous here because they have the vocabulary to make their story sound like a white paper. They're not just seeing things, they're identifying emerging trends in longitudinal data.

[00:02:43]This leads us to a massive blind spot, our fundamental misunderstanding of randomness. We underestimate how often streaks occur by pure chance. If you flip a coin 20 times, there's a decent chance you'll get a run of five heads in a row. A smart person sees that run and starts looking for a causal reason.

[00:03:03]Maybe the wind, maybe the weight of the coin, maybe their intent. They ignore the fact that in a truly random system, clusters are inevitable. When we see a cluster of cancer cases in a specific town, our pattern brain screams that there must be a toxic factory nearby.

[00:03:21]But often, if you plot random dots on a map, you will get clusters. It's just math. But our brains hate math. They love stories.

[00:03:31]Consider the Brain Gym, a program that was actually used in thousands of British state schools. Teachers, educated, well-meaning professionals, were telling kids to do brain buttons, which involved rubbing their collarbones to increase the flow of oxygenated blood to the frontal lobes. They were told to hold water on the roof of their mouth to hydrate the brain through the palate. It sounds like a comedy sketch, but it was treated as gospel.

[00:03:58]Why? Because it was wrapped in a protective layer of pseudo-science jargon. It used words like bilateral integration, neural pathways, and proprioception.

[00:04:09]When we hear technical jargon, the part of our brain that's supposed to be critical often just goes to sleep. We assume that if someone is using words we don't understand, they must be smarter than us.

[00:04:20]Smart people are actually more susceptible to this because they value intellectualism. They want to be in on the cutting edge, but the jargon acts as a Trojan horse. If you tell a smart person to wiggle their ears to feel better, they'll laugh at you. But if you tell them to stimulate the vestibulo-cochlear nerve through rhythmic auricular oscillation, they might just start taking notes.

[00:04:44]Then we have the visual evidence scam.

[00:04:47]Did you ever hear of a foot bath cleanse? It was a big alternative medicine fad a few years ago. You put your feet in a tub of salt water, a little electrode starts buzzing, and suddenly the water turns a disgusting murky brown. The practitioner tells you these are the toxins leaving your body, heavy metals, pesticides, last night's tequila.

[00:05:09]Smart people look at that brown water and think, "Well, I can see it with my own eyes. The evidence is right there."

[00:05:16]But your eyes are idiots.

[00:05:18]It's actually simple high school chemistry. It's electrolysis. The electrodes are made of iron. When you run a current through salt water, the iron corrodes, it rusts. The water turns brown because the machine is literally falling apart, not because your liver is cleansing through your soles. Try this.

[00:05:36]Run the foot bath without any feet in it. Guess what? The water still turns brown.

[00:05:42]Let's talk about homeopathy. Homeopathy is the belief that you can cure a disease by taking a substance that causes the symptoms of the disease and then diluting it so many times that there is basically none of the stuff left in the pill. It's a sugar pill with a memory of the active ingredient. Now, here's a concept here that every human needs to tattoo on their forearm, regression to the mean.

[00:06:08]Think about the last time you had a cold. You feel a bit sniffly, then you feel worse, then you feel terrible.

[00:06:15]That's the peak. Then, because your body has an immune system, you start to feel better. So, when do people seek out alternative treatments? Do they do it when they have a tiny sniffle? No, they do it when they feel like death warmed up. They do it at the peak of the curve.

[00:06:32]So, you feel 10 out of 10 awful. You take a homeopathic pill. Two days later, you feel four out of 10 awful. You credit the pill. But, statistically, you were always going to feel better. You hit the ceiling, there was nowhere to go but down. That's regression to the mean.

[00:06:49]Things that fluctuate will eventually move back towards the average. Smart people fall for this because we are terrible at intuitive statistics. We want to attribute a cause to every effect. If I did X and then Y happened, X must have caused Y. It's called the post hoc ergo propter hoc fallacy, which means this happened after that, so that must have caused this.

[00:07:15]Even doctors fall for this because they see patients get better and think, "My god, I'm a healer." instead of "My god, the human body is remarkably good at not dying." Homeopathy thrives on this illusion of efficacy. It's a massive misunderstanding of basic probability.

[00:07:33]This ties into the placebo effect and the ritual of care. Placebos can be powerful enough to even reduce physical pain and it's not just in your head.

[00:07:44]Research shows they trigger real auditory responses in the brain. Just the belief that you're getting help can actually change your biology.

[00:07:52]They use the ritual of care. You see, the way a treatment is delivered changes how well it works. Two sugar pills are more effective than one. A branded sugar pill with a high price tag is more effective than a generic one. Homeopaths often conduct long and pathetic consultations, sometimes lasting an hour, where they ask about your dreams, your diet, and your childhood. This ritual triggers a powerful placebo response. The clever person's trap here is thinking that because they feel better, the science behind the treatment must be valid. They'll say, "I don't care if it's just water, it worked for me." You're not paying for medicine, you're paying for a very expensive, very convincing lie.

[00:08:37]Then there's the confirmation bias and the selective filtering. High IQ people are the best at rationalizing their own preconceptions. We notice and remember information that fits our existing beliefs, while ignoring or explaining away evidence that contradicts them.

[00:08:55]Think about a brilliant scientist who has spent 20 years on a specific theory.

[00:08:59]When a study comes out showing their theory might be wrong, their brain doesn't say, "Oh, I was mistaken." Their brain says, "That study was probably flawed or the sample size was too small." Directly, this is cognitive ease. It feels good to be right. The brain rewards the click of a matching pattern with a hit of dopamine. Being smart just gives you more tools to build a wall between you and the truth. We are also social creatures who rely on social priming. In particular, we have a massive authority bias. We're more likely to believe a stupid thing if it's presented by someone with a convincing title or a white lab coat.

[00:09:40]Then, if everyone in your social circle, the people you consider smart and informed, believes in a specific detox myth or a biohack, it becomes incredibly difficult to remain a skeptic. This is social proof.

[00:09:55]Even a highly intelligent person will find it hard to stand against the consensus of their tribe.

[00:10:02]Then again, standing out from the crowd has its own problems. Consider the problem of false balance in news reporting. Say you put one rogue doctor against 10,000 scientists and call it fair debate.

[00:10:16]A good example is the MMR vaccine scare.

[00:10:18]In 1998, Andrew Wakefield published a study linking the vaccine to autism. The study involved only 12 children, 12.

[00:10:28]That is a statistically insignificant sample size for a claim of that magnitude. Yet, the media gave Wakefield equal airtime with the entire scientific establishment, creating the impression that there was a major debate on the question.

[00:10:43]Today, this has moved into the 3-hour podcast format. We see these expert guests, usually guys with a PhD in something totally unrelated to health, spending three freaking hours talking about how the mainstream doesn't want you to know about the dangers of fluoride or whatever the flavor of the week is.

[00:11:04]So, what is the actual smart stupid mechanism? It's called motivated reasoning. When a smart person wants to believe something, maybe because it makes them feel safe or because their social circle believes it or because they just spent a fortune on it, they use their high-octane brain to build a massive, complex architectural marvel of a justification. An average person might say, "I use crystals because they're pretty." A smart person will say, "I utilize quartz structures because their piezo electric properties interface with the bioelectric field of the human nervous system to promote homeostatic resonance."

[00:11:45]It's the same level of stupid. The second one just has a higher vocabulary.

[00:11:50]If anything, what I'm doing here is a plea for humility. At our core, we are still a tribe of monkeys, easily spooked and easily fooled. Our brains just weren't built for double-blind placebo-controlled trials. They were built for finding berries and not getting eaten.

[00:12:08]If you want to actually be smart, the first step is admitting how incredibly easy it is to be stupid.

[00:12:16]Next time you see a genius pushing a quantum healing seminar or a toxin-free lifestyle that involves more supplements than actual food, don't be surprised.

[00:12:27]They aren't lacking in brain cells.

[00:12:29]They're just using those cells to build a better cage for themselves.

[00:12:33]We like to think the truth is out there, but usually the biggest obstacle to the truth is the person staring back at us in the mirror.

[00:12:42]The most intelligent thing you can do is realize that you're just as fallible as everyone else.

[00:12:48]But ask yourself this. If you found out tomorrow that your favorite health hack or your most cherished intellectual belief was based on a flawed study with a sample size of 12 or was just a result of your body naturally regressing to the mean, would you actually be able to let it go? Or would your brain immediately start building a new, even more complex reason to keep believing it? Tell me what you think in the comments and hit subscribe. I'm trying to build a community of recovering smart people here. And oh, if you check out a few of my other videos and drop a like, maybe we can just forget that $40 candle you bought to realign your chakra.