Pascal famously argued that belief in God is rational because of the expected value of belief. If God exists, the rewards of believing—eternal salvation—are infinite, while if God does not exist, the costs of believing are finite. Even a minuscule probability of an infinite reward seemingly swamps any worldly cost.
That is the core of Pascal’s Wager. But then there is Pascal’s Mugging. A stranger approaches and insists that if Pascal hands over a mere 100 dollars, they will pay him back tomorrow with an infinite amount of money. It may seem absurd to accept this deal, but as long as the probability that the stranger is telling the truth is above zero, the expected financial gain of handing over the money still seems greater than keeping it. Yet this may seem irrational! [...]
