How You Were Fooled

This episode debunks the widespread belief that shaving causes hair to grow back thicker, darker, or faster. The truth is clear: shaving does not change the structure, speed, or color of hair growth. It only appears thicker because shaving cuts the hair straight across, leaving a blunt, flat tip instead of its natural soft, tapered end. That blunt regrowth feels rougher and looks darker — creating an illusion of thicker hair.
The myth spread due to visual misinterpretation, old flawed studies, and generations of repeated advice, not science. In reality, hormones and genetics — not razors — control hair growth. If shaving truly made hair stronger, bald men would shave to cure hair loss, which clearly doesn’t work.
The takeaway: Your razor isn’t rewriting your DNA. Shaving doesn’t make hair thicker — it just changes how it looks and feels temporarily.
 
 
 

This episode debunks the common belief that humans have only five senses — sight, hearing, smell, taste, and touch. While this idea is widely taught in childhood, it actually comes from Aristotle, not modern science. He guessed based on observation, and his framework became tradition rather than scientific fact.

This episode examines the enduring myth that medieval doctors used leeches for everything, portraying them as ignorant and superstitious. In reality, leeches were part of a wider medical practice called bloodletting, rooted in the ancient theory of balancing the body’s four humors. While leeches were common, they weren’t a universal cure — medieval physicians also prescribed herbs, diet, baths, rest, and even surgeries.
The image of leeches stuck because it was memorable, dramatic, and symbolic of “backward” medicine, reinforced by satire, art, and the narrative of modern progress. By the 19th century, bloodletting was mocked as barbaric, and the leech became a shorthand for medical ignorance.
However, the twist is that leeches aren’t entirely useless. Modern medicine still uses them in microsurgery and reconstructive procedures, since their saliva contains hirudin, a powerful anticoagulant that helps restore blood flow.
The episode highlights how the myth oversimplifies the past. Medieval medicine was flawed but not completely foolish, and even its strangest practices sometimes contained a kernel of truth. The persistence of the leech image says more about how we like to imagine history than about what actually happened.

This episode challenges the well-known saying that “lightning never strikes the same place twice.” While it’s often used as a metaphor for rare events, science shows the opposite is true.
Lightning seeks out the tallest, most conductive objects, and those spots are often hit repeatedly. Famous landmarks like the Empire State Building (struck 20–25 times a year) and the CN Tower (struck over 70 times annually) prove the myth wrong. Even mountains and tall trees experience repeated strikes over time.
The phrase originated in the 19th century as a poetic metaphor and stuck because it was catchy and memorable, not factual. However, believing it literally can be dangerous, as people may think a tree or building already struck is “safe.” In reality, the same location can be hit again within the same storm.
The takeaway? Lightning absolutely strikes the same place twice—and often more. The myth survives because of language and storytelling, but the science is clear: electricity follows the easiest path, even if that path has already been used.

This episode explores the famous legend of Isaac Newton’s “apple moment.” While the story of an apple hitting Newton on the head is widely told, it isn’t true. Newton did recall that watching an apple fall made him reflect on why objects always fall straight down, but the dramatic “bonk on the head” version was invented later to make the tale more entertaining.
The myth stuck because it’s a simple, vivid story that makes a complex discovery easy to grasp. In reality, Newton’s theory of gravity came from years of study in mathematics and astronomy, building on the work of thinkers like Galileo and Kepler. The apple wasn’t the cause of his genius, but rather a symbol of his ability to connect ordinary experiences with profound scientific questions.
The episode highlights how we were fooled by a good story—one that humanized Newton, simplified his achievement, and made science more accessible. The truth, though less dramatic, is even more impressive: Newton revolutionized our understanding of the universe not through a single accident, but through relentless study and insight.

This episode debunks the myth that people in the Middle Ages believed the Earth was flat. In reality, knowledge of a spherical Earth dates back to ancient Greece, with philosophers like Aristotle and Eratosthenes providing early evidence and calculations. Medieval scholars preserved and expanded on this knowledge, and by Columbus’s time, educated Europeans already accepted Earth’s roundness.
The “flat Earth Middle Ages” myth was actually invented in the 19th century. Writers like Washington Irving dramatized Columbus’s story, portraying him as a hero who defied flat-Earth believers. This narrative served as a way to contrast “ignorant” medieval superstition with “modern” enlightenment, and it stuck in popular imagination.
In truth, the real debate in 1492 was not about the Earth’s shape but about its size and whether ships could cross the ocean with available supplies. Columbus’s critics weren’t flat-Earth believers — they were concerned realists.
The episode highlights how a powerful storytelling device can overshadow facts, showing that myths endure not because they’re true but because they’re memorable. The flat Earth story says more about the 19th century than it does about the Middle Ages.

This episode debunks the disturbing myth that humans swallow eight spiders a year while asleep. The claim didn’t come from scientific research but from a 1990s article that used it as an example of how easily misinformation spreads. Ironically, the “example” itself became one of the internet’s most repeated fake facts.
Science makes it clear: spiders avoid humans, are scared by movement and vibrations, and find our mouths unattractive environments. The odds of one crawling inside while we sleep are close to zero. In reality, the number of spiders we swallow in our lifetimes is most likely none at all.
The myth stuck because it’s shocking, disgusting, and memorable — and because repetition made it feel true. Psychologists call this the illusory truth effect. Media, horror stories, and pop culture reinforced it further.
Ultimately, the episode shows how a creepy but catchy idea became accepted as “fact,” proving just how easily we can be fooled when fear and curiosity overpower evidence. The truth? You can sleep peacefully — no spiders are sneaking in.

This episode debunks the long-standing myth that swimming right after eating causes cramps and can lead to drowning. The belief likely originated in the early 20th century as a way for parents and instructors to keep kids safe, reinforced by the “wait 30 minutes before swimming” rule.
In reality, while digestion does increase blood flow to the stomach, it does not deprive the muscles of oxygen. Scientific studies, along with statements from organizations like the American Red Cross and Johns Hopkins, show that eating before swimming poses no danger of drowning. At worst, someone might feel a little sluggish or uncomfortable if they swim vigorously on a full stomach.
The myth persists because it sounds logical, it was repeated for generations, and it provided a simple way to enforce caution. The real risks in swimming come from alcohol use, fatigue, or lack of supervision, not from having a meal beforehand.
In short, you can safely swim after eating — the myth is nothing more than a well-intentioned but scientifically unfounded warning.

This episode uncovers the enduring myth that Vikings wore horned helmets, a stereotype popularized in art, theatre, and pop culture rather than history. Archaeological evidence shows that Viking helmets were practical, conical or rounded iron designs with no horns—horns would have been impractical in battle.
The false image took root in the 19th century during the Romantic era, when artists and Wagner’s operas used horned helmets for dramatic flair. This theatrical invention spread through literature, illustrations, and eventually Hollywood, cementing the myth in popular imagination.
In reality, the horned helmets belonged to earlier Bronze Age ceremonial rituals, not Viking warriors. The actual Vikings were remarkable sailors, traders, and storytellers whose influence stretched across Europe and beyond.
The horned helmet myth reminds us how symbolism and spectacle can rewrite history, fooling generations into mistaking artistic invention for fact. Vikings didn’t need horns to be legendary—their real achievements were far more impressive.

This episode explores the widespread myth that the world would end on December 21, 2012, based on a misunderstanding of the Mayan Long Count calendar. While that date did mark the end of a significant calendar cycle (the 13th bʼakʼtun), the Maya saw it as a time of renewal, not an apocalypse.
The myth was fueled by Western misinterpretations, media hype, and pseudoscientific claims — including solar flares, magnetic pole reversals, and the fictional planet “Nibiru.” Hollywood further amplified the fear with the release of the movie 2012, turning speculation into sensationalism.
Although many didn’t take it seriously, some people built bunkers, joined survivalist groups, or altered life plans out of fear. NASA and scientists actively debunked the myths, but the idea persisted because of its emotional power and viral spread.
In the end, nothing happened on December 21, 2012. The episode highlights how fear, media, and misinterpreted history can combine to create global myths — and how easily we can be fooled when we stop questioning the facts.