The Sunk Cost Fallacy is a cognitive bias in which people make decisions (time, money, effort/resources) based on past costs, even when those costs are no longer relevant. In other words, people continue to invest in a failing project or venture because they have already invested time, money, or effort into it.
Mental Models: Cognitive Biases
Cognitive biases are systematic errors in our thinking that can impair decision-making by leading to irrational judgments. By understanding these biases, we can better recognize their impact on our thought processes and avoid their negative effects.