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Not quite. I don't have a reference, but what various Objectivists have said is that you should do your own philosophical thinking (as you should do all thinking) and live by whatever you conclude. You should do this even if the result of your thinking is not Objectivism. If you err, the fact that you erred while reasoning leaves open the possibility of discovering your mistake. If you didn't reason, you have no way to know whether or how your philosophy is wrong.