In the laboratory you can and should wait to announce your findings until the evidence is all in and has been carefully assessed, following the best protocols of double-blind testing; but in many arenas of human life, including the political, it’s not possible to do any of those things. We must muddle along as best we can, and we must always be honest with ourselves about the muddling, and not pretend that the evidence is more conclusive than it really is. As I’ve said before: Thinking is hard.
