On the other hand . . . there’s such a thing as sufficiently clear-cut evidence, that it no longer significantly matters where the idea originally came from. Accumulating that kind of clear-cut evidence is what Science is all about. It doesn’t matter any more that Kekulé first saw the ring structure of benzene in a dream—it wouldn’t matter if we’d found the hypothesis to test by generating random computer images, or from a spiritualist revealed as a fraud, or even from the Bible. The ring structure of benzene is pinned down by enough experimental evidence to make the source of the suggestion
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