I think a counterexample to “you should not devote cognition to achieving things that have already happened” is being angry at someone who has revealed they’ve betrayed you, which might acause them to not have betrayed you.
I think a counterexample to “you should not devote cognition to achieving things that have already happened” is being angry at someone who has revealed they’ve betrayed you, which might acause them to not have betrayed you.