Get agreement using escalation of commitmentWhy we double down on bad decisions.

From the show

Persuasion Beyond Power

Understand the tendency to stick with a failing plan because of past investments. By framing a request as a continuation of someone's existing commitments, you can make them more likely to agree. This bias explains why people will sometimes say 'yes' to one more request, not just to help you, but to justify their previous choices and prove their initial efforts weren't a waste.