The scientists who ignored Miller's evidence for the ether were not just correct in retrospect...
they were correct at that time . That is the point Michael Polanyi (and I following him) are making about Miller's experiments . To note that they were correct in retrospect presents no evidence for determining good scientific practice. Consider someone who in 1700 believed that there were planets beyond Saturn because in an opium trance he had a vision of some outer planets. Maybe this was a "true vision," or maybe not, but in any case, it was not a good scientific reason for holding the proposition. And that is not because it is a vision -- we will see that visions are what inspire great scientists -- but because it is not a vision offering a rational, scientific explanation of previously unexplained phenomena. And thus the fact that in retrospect, that person turned out to be correct says nothing about how scientists ought to proceed in practice. The scientists who were presented with Miller's evidence in 1926 did not have the luxury of saying, "Wel...