Sunk Cost Fallacy

02What People Think

We have already paid, so leaving now would make the whole thing a waste. Staying must recover something.

03What’s Underneath

An unrecoverable payment stays gone whether you stay or leave. The next decision concerns what happens from this point onward: more enjoyment, more discomfort, extra expense, or an alternative use of your time. Trouble begins when the old bill receives more weight than those remaining consequences.

Imagine two people who dislike a prepaid activity and would both prefer to go home. They continue solely because the fee cannot be refunded. Their participation cannot reverse the charge, but it can add a miserable afternoon. The wish to make the original decision feel justified has become a new reason to persist.

A paid-for experience can still have real remaining value. Enjoying a useful service after paying for it is entirely compatible with sensible choice. The fallacy requires past expenditure to push the decision away from what the future benefits and costs support. It can involve time and effort as well as money.

04The Game

If the old payment disappeared from the explanation, would continuing still make sense? The distinction becomes sharp when the next hour promises little value but abandoning it feels like admitting the previous expense was wasted.