Capuchin Monkeys Given Unequal Rewards
vladimerk1 · Demo · 1 min · 2012 · YouTube title: Capuchin monkey fairness experiment
Why it's here
HN uses it as shorthand for the innate human and primate sense of fairness in threads on pay, wealth and inequality.
What it covers
A one-minute clip from Frans de Waal's TED talk showing two capuchin monkeys given unequal rewards (cucumber versus grape) for the same task. The monkey receiving the lesser reward reacts with protest.