Philosophy / Decision-Making / Psychology

Buridan's Ass

When two options appear equally attractive, the search for the "correct" choice can paralyze action.

Popularity

Usefulness

Aliases

Buridan's donkey / Buridan's principle / paradox of indecision

Domains

Philosophy, decision theory, behavioral psychology, management

Definition

Buridan's Ass is a thought experiment about a perfectly rational donkey placed exactly between two identical bales of hay that, unable to choose between equally good options, starves to death — illustrating how indecision between equal choices can be worse than either choice itself.

When two options appear equally attractive, the search for the "correct" choice can paralyze action.
The cost of not deciding often exceeds any difference between the options.
Choosing something and moving is usually better than optimizing forever between near-equals.

Facing equal alternatives, a strictly "rational" actor has no tiebreaker and stalls.
Real harm comes not from picking the wrong bale but from picking neither.
Adding any small tiebreaker — a deadline, a coin flip, a default — breaks the deadlock.

A buyer cannot decide between two similar apartments of equal merit and keeps postponing; while deliberating, both are taken by others. The delay, not the choice, caused the loss.

Example: The paradox is named after 14th-century French philosopher Jean Buridan, who discussed moral determinism, though the starving-donkey illustration was used by critics to mock his view.
Why it fits this rule: It dramatizes how demanding a decisive reason before acting can produce fatal inaction.
Verification status: Buridan is the namesake, but the donkey image does not appear in his surviving works; it was attributed later, partly satirically. Earlier versions trace to Aristotle.

Do not use it to justify reckless snap decisions when options genuinely differ and analysis matters.
Do not treat every hard choice as a Buridan situation; sometimes more information truly changes the answer.
Do not ignore that some delays are strategically valuable.

Invented by: Named after Jean Buridan (c. 1300–1361); the underlying idea predates him (Aristotle, al-Ghazali).
Year of invention: 14th century (concept); ancient roots.
Country / context of origin: Medieval European philosophy.

The scenario is a philosophical illustration rather than an empirical law, but it maps onto well-documented modern findings on choice overload and decision paralysis.