Signals And Full, To-The-End Commitment

Throughout human evolution, being able to discriminate true allies (who stick with you no matter what) from fair-weather friends (who abandon you when you fall ill) could make the difference between life and death. As such, humans are obsessed with moral hypocrisy. We carefully scrutinise potential romantic partners, friends or team members for signs that they’re not only in it for the money. And since – per the logic of costly signalling – the costs that people are willing to pay are a reliable signal of their commitment, we pay extra attention to these costs when we evaluate other people.