# Newcomb's paradox

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In philosophy and mathematics, **Newcomb's paradox**, also known as **Newcomb's problem**, is a thought experiment involving a game between two players, one of whom is able to predict the future.

Thought experiment

**Quick facts: Predicted choiceActual choice, A + B (...**▼

Predicted choice Actual choice |
A + B (B has $0) |
B (B has $1,000,000) |
---|---|---|

A + B | $1,000 | $1,001,000 |

B | $0 | $1,000,000 |

Newcomb's paradox was created by William Newcomb of the University of California's Lawrence Livermore Laboratory. However, it was first analyzed in a philosophy paper by Robert Nozick in 1969[1] and appeared in the March 1973 issue of *Scientific American*, in Martin Gardner's "Mathematical Games".[2] Today it is a much debated problem in the philosophical branch of decision theory.[3]