But that's not the metaphor. You've added a constraint to it. The metaphor concerns bias and the error it presupposes and the fallacious conclusions it produce

But that's not the metaphor. You've added a constraint to it. The metaphor concerns bias and the error it presupposes and the fallacious conclusions it produces. "Science is a bit like the joke about the drunk who is looking under a lamppost for a key that he has lost on the other side of the street, because that's where the light is. It has no other choice." [0] Physicists who conclude that only the quantifiable exists are the paradigmatic example. Their methods select for the quantifiable, so how could they find anything else using them? [0] https://en.wikipedia.org/wiki/Streetlight_effect https://en.wikipedia.org/wiki/Streetlight_effect