I think people would do well to learn about it and techniques like it (like the foot-in-the-door technique) because they're pretty common ways of manipulating people. It's often used in in-app purchase flows, for example, where they show an expensive option first (like $100 worth of in-game currency) and then an option that seems much more reasonable by comparison (like $20).
It's sometimes known as the door-in-the-face technique.
I think people would do well to learn about it and techniques like it (like the foot-in-the-door technique) because they're pretty common ways of manipulating people. It's often used in in-app purchase flows, for example, where they show an expensive option first (like $100 worth of in-game currency) and then an option that seems much more reasonable by comparison (like $20).