Browse the archive
Explore outdated "facts" by educational era — no graduation year required.
1970s
Cold War science, food pyramids, and sugar highs.
Explore1980s
Personal computing arrives, eggs are evil, and AIDS misinformation spreads.
Explore1990s
Pluto is a planet, the brain has halves, and the internet is for academics.
Explore2000s
Learning styles, IQ tests, and climate change feels far away.
Explore2010s
Gluten panic, taste zones, and mobile phones are just a fad.
Explore2020s
COVID myths, AI content, pandemic-era misinformation, and history corrections.
ExploreScience
Planets, senses, blood color, and other textbook science that moved on.
ExploreHealth
Sugar highs, swimming rules, water quotas, and other health-class lore.
ExploreTechnology
Internet-for-academics and other computer-lab predictions that aged badly.
ExploreHistory
Vikings, Pilgrims, and other history-class pictures that don’t hold up.
ExplorePsychology
Learning styles, brain halves, and other psych myths that oversimplified minds.
ExploreGeography
Wall-map certainties and landmark lore that geography class oversold.
ExploreEducation
Stories about learning and ability that classrooms treated as settled.
ExploreMyths whose updated understanding emerged most recently.
What you were taught
What we know now
By the early 2020s, AI-generated text, images, and even videos became nearly indistinguishable from human-created content, challenging detection methods.
Updated understanding emerged around 2023
What you were taught
What we know now
The Tea Act of May 10, 1773 did not raise colonial tea taxes. It let the East India Company ship tea directly to North America and cut British duties, lowering the price of legal tea while the existing three-pence Townshend duty stayed in force. On December 16, 1773, protesters dumped 342 chests from the Dartmouth, Eleanor, and Beaver into Boston Harbor. Colonists opposed accepting cheaper taxed monopoly tea without representation in Parliament, and the Act also threatened colonial merchants—including smugglers of Dutch tea such as John Hancock—who stood to lose business. The slogan was not a pretext historians have discarded; cheaper tea made the constitutional fight harder to ignore.
Updated understanding emerged around 2023
What you were taught
What we know now
Bananas do not grow on trees. Michigan State University Extension notes they are fruit of the world’s largest herb: the upright “trunk” is a pseudostem made of packed leaf bases, not woody tissue. The fruit is botanically classified as a berry (seeds develop inside the flesh). Commercial Cavendish bananas are typically propagated by cuttings and are parthenocarpic, producing fruit without pollination.
Updated understanding emerged around 2022
What you were taught
What we know now
While rare side effects like specific blood clot disorders were linked to certain COVID-19 vaccines (e.g., Johnson & Johnson, which is no longer available in the U.S.), the vast majority of COVID-19 vaccines do not cause blood clots or increase stroke risk. The benefits of vaccination far outweigh these rare risks, and the risk of blood clots and heart problems is higher with COVID-19 infection itself.
Updated understanding emerged around 2022
What you were taught
What we know now
This myth is false. Researchers have found no evidence linking COVID-19 vaccines to an increase in cancer rates or more aggressive forms of cancer. This misconception often arises from individual experiences or misinterpretations of data.
Updated understanding emerged around 2022