Categorical imperatives are attempts to get the moral reasoner to consider the consequences if all people also acted according to that imperative.

True

False

Why has something gone wrong if psychological egoism is understood so that it is irrefutable or untestable?

Because then psychological egoism would certainly be true.

Because then psychological egoism would certainly be false.

Because then there is somethingsome kind of behaviorwhich, if psychological egoism were true, we could be assured would happen. That is, psychological egoism tells us something about human behavior that is not included in what everyone already knows.

Because then there is nothingno kind of behaviorwhich, if psychological egoism were true, we could be assured wouldn't happen. That is, psychological egoism doesn't really tell us anything about human behavior that everyone doesn't already know.