komponisto comments on The Strong Occam's Razor - Less Wrong
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A prediction that's impossible to test is a contradiction in terms. Show me any unfalsifiable theory, and I'll invent some predictions that follow from it, they will just be "impossible to test".
...and this is why Popperian falsificationism is wrong!
There aren't any "unfalsifiable" theories, though there may be unintelligible theories.
I disagree, since prediction != theory. It is certainly possible to have a theory (e.g. Freud's ideas about the ego and superego) that make no predictions. In the comment above, cousin_it is correct in that "unfalsifiable prediction" is a contradiction, but "unfalsifiable theory" is not. It just means that the theory is not well-formed and does not pay rent.
Though cousin_it will have to speak for himself, I believe he was specifically disagreeing with this when he wrote: