An experimenter walks into a room and gives you these three numbers. 2, 4, 6. She tells you that the numbers follow a simple rule, and your job is to discover the rule by proposing different strings of three numbers. The experimenter will then tell you whether the strings you propose conform to the rule. You get as many tries as you want, and there’s no time limit. Give it a shot: What do you think the rule is? For most participants, the experiment went in one of two ways. Participant A sai...
