the.com/inversion
Flip the problem upside down and watch the answers fall out.
means Turning something into its opposite in order, position, or logic — often to reveal what was hidden right-side up.
from From Latin invertere, to turn inside out, from in- (in) plus vertere (to turn) — the same root that spins versus and versatile.
MathDividing means multiplying by the inverse.
WeatherWarm air traps cold below, sealing in smog.
StrategyCharlie Munger swears by solving problems backward.
MusicFlip a chord and the bass note changes.