In a classic study, Wason showed people an example set like "2, 4, 6" and then had them try to infer what rule had created that set. They were instructed to test their candidate rule by coming up with a new example set (such as "6 8 10"); the experimenter would then tell them whether this new example set followed the true rule. What was the key finding of this research? Group of answer choices people generate a rule, then come up with a new example set that fits their rule people have difficulty generating possible rules to test smart people have no trouble finding the correct rule and testing it people generate a rule, then look for information that could disconfirm it