the.com/brainteaser

A puzzle designed to make smart people feel briefly, deeply stupid.

means A puzzle or problem that's deliberately tricky to solve, built to exercise mental agility rather than knowledge.

from A straightforward 19th/20th-century compound of 'brain' plus 'teaser' — from 'tease,' meaning to provoke or torment playfully. The word followed the same pattern as other invented challenges of the era (brainstorm, brainwave), picturing the mind as something you could prod, pester, and set deliberately on edge for sport.

origin era
term popularized in puzzle columns of the 1900s
not iq tests
measures lateral thinking, not raw intelligence
job interviews
google famously abandoned them, they predicted nothing
best trait
answer feels obvious only after you see it
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