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Pascal’s Wager


Pascal's Wager is an argument in philosophy devised by the seventeenth-century French philosopher, mathematician and physicist Blaise Pascal (1623–62). It posits that humans bet with their lives that God either exists or does not.

Pascal argues that a rational person should live as though God exists and seek to believe in God. If God does actually exist, such a person will have only a finite loss (some pleasures, luxury, etc.), whereas they stand to receive infinite gains (as represented by eternity in Heaven) and avoid infinite losses (eternity in Hell).

Pascal's Wager was based on the idea of the Christian God, though similar arguments have occurred in other religious traditions. The original wager was set out in section 233 of Pascal's posthumously published Pensées ("Thoughts"). These previously unpublished notes were assembled to form an incomplete treatise on Christian apologetics.

Historically, Pascal's Wager was groundbreaking because it charted new territory in probability theory, marked the first formal use of decision theory, and anticipated future philosophies such as existentialism, pragmatism and voluntarism.

The Wager uses the following logic (excerpts from Pensées, part III, §233):

Pascal asks the reader to analyze humankind's position, where our actions can be enormously consequential but our understanding of those consequences is flawed. While we can discern a great deal through reason, we are ultimately forced to gamble. Pascal cites a number of distinct areas of uncertainty in human life:

We understand nothing of the works of God unless we take it as a principle that He wishes to blind some and to enlighten others.


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