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Capuchin monkey fairness experiment

vladimerk1 · 1.7M views · 2012-04-13 · 0:58

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Overview

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.

On Hacker News

HN uses it as shorthand for the innate human and primate sense of fairness in threads on pay, wealth and inequality.

Discussed on HN; no positive recommendation is recorded in this export · HN mentions 2013–2026

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What people said

maerF0x0 · 2026-04 · Reference

I mean, it seems pretty obvious, no? Wealth is concentrated and can skew the averages, but happiness, even if rated on a scale, is not particularly able to skew the number up... so as wealthy americans got spectacularly rich, pulling up the "rich" side, maybe making them equisitely happy... a more widespread shift in sentiments are pulling down the average. And a lot of this makes sense... Wealth doesn't add much happiness over a certain threshold. A naive happiness maximizing algo would probably do something like cap someone around that number and redistribute the wealth to those below it. Plus there's the monkey grape/cucumber experiment - [VIDEO] ... Humans are social status sensitive, meaning we're likely to have bad feelings (and make irrational choices) when we feel our place in the herd is falling or below someone else's. Eg: People living near lottery winners are more likely to go bankrupt than similar people who don’t have a winning neighbor, presumed to be a "keeping up with the joneses" kind of issue.

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sva_ · 2024-02 · Reference

> the mere act of earning more money than someone else is a sin It is pretty universal among the animal kingdom [VIDEO]

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kelseyfrog · 2023-12 · Reference

I'm always reminded of the video where one monkey is rewarded with a cucumber and one with a grape[1]. Certainly getting a cucumber is infinitely better than not having a cucumber, and yet the monkey protests. Despite having higher cognitive functions, that impulse still exists and can only be suppressed for so long and so far. No one has infinite capacity to maintain what they see as unfairness indefinitely, especially when it seems that humans make their own rules. 1. Capuchin monkey fairness experiment, total duration: 57s, [VIDEO]

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Sources

Video by vladimerk1, played through YouTube.

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