You might think that the best way to get someone to do something is to flat-out tell them. This makes sense, but unless you have actual authority over that person (because you’re their parent, boss, or teacher, for instance) it’s not the best way to go. It turns out that indirect suggestion produces far better results when dealing with people who could just as easily say, “No thanks.” This is how nudge theory works.
Source: A Subtle Suggestion May Be More Powerful Than Direct Instruction
