Flat Earth Myth Debunking

The cluster discusses the historical misconception that ancient or medieval people widely believed the Earth was flat, with commenters citing evidence like Eratosthenes' measurements and Asimov's 'Relativity of Wrong' to affirm early knowledge of Earth's sphericity.

📉 Falling 0.3x Science
1,340
Comments
20
Years Active
5
Top Authors
#8420
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2007
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Keywords

relativityofwrong.htm tufts.edu wikipedia.org en.m earth round flat spherical sphere people thought believed geometry thought shape

Sample Comments

minikites • Jan 15, 2014 • View on HN

Uh, what? They knew the earth was a sphere:https://en.wikipedia.org/wiki/Eratosthenes#Measurement_of_th...

elygre • Jul 10, 2017 • View on HN

That's like saying that the world was flat before they could prove that it is round.

cantrip • Jan 16, 2018 • View on HN

Please respond to the point about the earth being round.

Hasu • Jun 29, 2024 • View on HN

"When people thought the Earth was flat, they were wrong. When people thought the Earth was spherical, they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together."

XorNot • Nov 3, 2013 • View on HN

Asimov wrote an excellent piece on this - The Relativity of Wrong: http://chem.tufts.edu/answersinscience/relativityofwrong.htmThe Earth isn't flat, but it certainly approximates being flat for small measurements of its surface (such as those early civilizations would've been able to make).

nocitrek • Jun 15, 2020 • View on HN

Wait, I thought earth was flat?

namaria • Apr 11, 2023 • View on HN

This is such a common trope. Erasthenes observed the Earth must be round using shadows over 2 thousand years ago. There was never an intellectual controversy about it before internet dupes fell for an obvious prank.

krapp • Nov 3, 2020 • View on HN

"When people thought the Earth was flat, they were wrong. When people thought the Earth was spherical, they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together." -- Isaac Asimov

brazzy • Mar 6, 2024 • View on HN

There are people who question that the Earth is a sphere.

dragonwriter • Jan 17, 2018 • View on HN

The earth being round and its size is demonstrable without a rocket ship (and was demonstrated a couple millennia before anyone fired a rocket into space.[0])But, in any case, even ignoring that, the analogy was inapt.[0] https://en.m.wikipedia.org/wiki/Eratosthenes