Famous claims about the Parthenon, the pyramids and Leonardo lack solid support. A few works did use the ratio deliberately, mostly from the late nineteenth century onward, plus rare Greek cases.
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No. No document or eyewitness records her saying it. The line appeared in Rousseau's Confessions when she was a child, and was pinned on her decades after her death.
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No horned helmet from the Viking Age has ever been found. The image comes largely from 19th-century art and from older Bronze Age horned helmets that predate the Vikings.
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No. Einstein excelled at mathematics. The myth likely grew from a failed entrance exam in other subjects and a reversed grading scale at his Swiss school.
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Almost certainly not. Revere's mission was secret, colonists still thought of themselves as British, and the phrase appears in the record only decades later.
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No. Educated medieval Europeans generally knew the Earth was a sphere. The flat-Earth story is largely a modern myth, popularised in the nineteenth century.
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Most specialists say no. No medieval chastity belt is known to survive, and the earliest drawing, from 1405, was probably a joke. Museum examples are mostly later.
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No. A vomitorium was a passage in an amphitheatre or theatre that let crowds enter and leave quickly. The vomiting-room idea is a modern misreading of the word.
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Newton did say an apple fall prompted his thinking about gravity, but no source says it hit his head, and the idea developed gradually rather than in one moment.
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No. Bulls are red-green colorblind and charge at movement and perceived threat, not at red. Why the bullfighter's cape is red is less certain.
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The claim that people swallow several spiders a year in their sleep is a myth. Swallowing one is not strictly impossible, but it would be a rare, random event with no documented case.
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No. Imaging, injury studies and metabolism show the whole brain is used. The 10 percent idea likely grew from self-help writing, and its exact origin is uncertain.
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Napoleon was about 5 foot 5 to 5 foot 7 in English units, average or slightly above for a Frenchman of his era. The myth grew from unit confusion, his surroundings and hostile caricature.
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No. Washington wore dentures made of ivory, human and animal teeth, and metals. Wood was never used, though stained dentures may have looked like wood.
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No. Electric light existed decades before him. Edison's achievement was a long-lasting, commercially practical incandescent bulb and the power system around it.
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Troy was a real city that was attacked and destroyed more than once. Whether any of this was Homer's ten-year war is unproven, though many specialists see a historical kernel.
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No. Lightning often strikes the same place repeatedly, especially tall, pointy, isolated objects, and a single flash can itself hit the same spot several times.
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No. At room temperature glass behaves as a stable solid, and uneven old window panes come from how they were made, not from flow.
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No. The wall is too narrow and too similar in color to its surroundings to be seen by the unaided eye from orbit, and it cannot be seen from the Moon.
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No. Both sides of the Moon get sunlight. The far side is the side we never see from Earth, and it is "dark" only in the sense of being unknown or out of radio contact.
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Not in everyday sinks, tubs or toilets. The Coriolis effect is real, but it is far too weak to set the swirl at that scale. Only carefully controlled experiments show it.
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No. Air resistance caps a falling penny at roughly 25 mph, so it would sting but not kill. The myth ignores drag, which keeps the coin from reaching lethal speed.
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Human blood is always some shade of red, bright with oxygen and darker without it. Veins look blue because of how light interacts with skin and vessel walls.
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No. Studies comparing habitual knuckle crackers with non-crackers have found no increased arthritis, though forceful cracking can occasionally cause injury.
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No. Humans and chimpanzees both descend from a shared, now extinct ancestor that lived roughly 8 to 6 million years ago, and each lineage has evolved separately since.
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No. The head loses heat roughly in proportion to its share of body surface, about 7 to 10 percent. The myth persists because heads are often the only uncovered part in the cold.
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Controlled trials and a major meta-analysis find no effect of sugar on children's behavior. Parental expectation and exciting settings likely explain the belief.
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No. The three-second claim is a myth. Research shows goldfish remember for weeks, months and possibly longer, and they can learn routines, cues and tasks.
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No. Taste receptors for all basic tastes are spread across the tongue and mouth. Small differences in sensitivity exist, but the classic tongue map is a myth.
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No. All bats can see. Their vision varies by species, and many also use echolocation, often together with sight rather than instead of it.
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No. Ostriches do not bury their heads. Several real behaviors, such as turning eggs and lying flat, can look like it from a distance, and the story is about 2,000 years old.
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No. Ophthalmologists and optometrists say reading in dim light does not cause lasting harm, though it can tire the eyes and dry them out for a while.
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No. A camel's hump is mostly fat, an energy reserve. Camels survive without water by losing very little of it and by tolerating major dehydration.
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No. Shaving does not change hair thickness, color or growth rate. Regrowing hair only looks and feels coarser because the cut tip is blunt.
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Waking a sleepwalker does not itself cause medical harm, though confusion or fear can follow. Most sources advise guiding them back to bed, and waking them gently if they are in danger.
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No. Eight glasses is a memorable goal, not a science-backed requirement. Needs vary by person, climate and activity, and food and other drinks count toward them.
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Botanically a tomato is a fruit; in cooking and under US customs law it is a vegetable. The Supreme Court ruled in 1893 because a tariff taxed vegetables but not fruit.
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No. Hair and nails do not keep growing after death. They look longer because the skin dries out and shrinks back, which creates an optical illusion.
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Not as a safety rule. Bacteria can transfer to dropped food in under a second, and moisture and surface type matter at least as much as time, though longer contact does add more bacteria.
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No. Alcohol makes your skin feel warmer by shifting blood to the surface, but this speeds up heat loss and can lower your core temperature, especially in the cold.
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Probably, but not certainly. The evidence rests on two accounts, the date is unknown, and the popular picture of a lightning strike is a myth.
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Eye patches and wooden legs have some basis in fact, though they were not the norm. Walking the plank is mostly fiction, with at most a few poorly documented cases.
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No evidence shows the iron maiden existed in the Middle Ages. It appears in writing in the late 1700s, and surviving examples date from the 19th century.
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No. Nineteen people were hanged at Salem in 1692, and one man was pressed to death. Burning at the stake belongs to European witch hunts, not to Salem.
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No fiddle existed in Rome. Ancient writers disagree on whether Nero sang during the fire of 64 AD, and Tacitus called the story a rumor.
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Low historical life expectancy mostly reflects many infant and child deaths. Those who survived childhood often lived into their 50s, 60s and 70s, though evidence is patchy.
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Most gladiator fights did not end in death for the loser, though the rate varied by period. What the thumb gesture meant is uncertain, and the popular thumbs-down image is not securely supported.
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Mostly no. Medieval people drank both ale and water, and the idea that they avoided water out of fear is largely a modern myth, though some historians still stress its risks.
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No. The five-sense list is a simplification dating to Aristotle. Experts agree there are more, but they disagree on the exact number because the definition of a sense is not settled.
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Large reviews, including a 2025 WHO review, find no causal link between vaccines and autism. The claim traces to a retracted 1998 paper. A CDC webpage now words the matter differently.
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At typical dietary levels MSG has not been shown to be harmful. The 'Chinese restaurant syndrome' scare grew from a 1968 letter and weak early studies.
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