What you think you know — and what's really true

Under the Assumption

What you think you know — and what's really true

Articles — Page 2

Columbus Never Argued About a Flat Earth — That Story Was Written by a Novelist
Tech History

Columbus Never Argued About a Flat Earth — That Story Was Written by a Novelist

The image of Columbus bravely sailing west while superstitious scholars warned he'd fall off the edge of the world is one of the most vivid stories in American history education. It's also almost entirely fiction — and the man who invented it wasn't a historian. He was the author of 'The Legend of Sleepy Hollow.'

Mar 13, 2026

Eight Glasses a Day: The Hydration Rule That Was Never Really a Rule
Health

Eight Glasses a Day: The Hydration Rule That Was Never Really a Rule

Millions of Americans track their water intake like it's a moral obligation, all because of a government guideline from 1945 that almost nobody read past the first sentence. Modern science tells a much more personal story about hydration — and it starts with questioning the number we've all accepted as gospel.

Mar 13, 2026

The American Dream Was Already a Different Idea Before You Were Born
Culture

The American Dream Was Already a Different Idea Before You Were Born

Ask most Americans what the American Dream means and you'll hear something about homeownership, financial success, and working your way up. But the man who coined the phrase in 1931 had something almost entirely different in mind — and tracing how the idea got quietly redefined reveals a lot about who that redefinition served.

Mar 13, 2026

Eight Glasses a Day: The Health Rule That Was Never Really a Rule
Health

Eight Glasses a Day: The Health Rule That Was Never Really a Rule

For decades, Americans have been told to drink eight glasses of water a day like it's gospel. But nutrition scientists say the evidence behind that number is surprisingly thin — and the real story of where it came from might change how you think about staying hydrated.

Mar 13, 2026

Your Parents' Medical Advice Was Confidently Wrong — Here's the Proof
Health

Your Parents' Medical Advice Was Confidently Wrong — Here's the Proof

Generations of American parents delivered health warnings with total authority — don't sit too close to the TV, you'll catch a cold from wet hair, cracking your knuckles will ruin your joints. Modern research has quietly dismantled most of them. Here's what the science actually says, and where these myths came from in the first place.

Mar 13, 2026