Definition
Pascal’s Wager is a philosophical argument presented by Blaise Pascal proposing that individuals should live as though God exists and seek to believe in God, because the potential infinite gains (heaven) vastly outweigh the finite losses (earthly pleasures), regardless of the actual probability of God’s existence.
Why It Matters
Whether or not you agree with its religious conclusion, the Wager is the foundation of modern Risk Management. It teaches that “expected value” is more important than “likelihood.” In the face of ultimate extinction (AI safety, climate collapse, or theological risk), a 1% probability of an infinite loss carries more weight than a 99% probability of a finite gain. Ignoring the “asymmetric payoff” logic of the Wager leads to “gambler’s ruin” on an existential scale.
Core Concepts
- Expected Value: Calculating the utility of an outcome multiplied by its probability.
- Asymmetric Payoffs: A scenario where the downside is strictly bounded (finite loss of time/pleasure) but the upside is unbounded (infinite reward).
- Pragmatic Justification: Arguing for belief based on self-interest rather than epistemic truth.