Not weighing in either way on cryonics itself, but on the meta level: Why do you consider that strong evidence? It seems to me that most people who don't think cryonics will work simply aren't interested in it, and therefore haven't tried very hard to prove that they're right.
That's not my experience; a great deal of anti-cryonics stuff has been written, and it's my experience that a lot of people who think it won't work seem to have quite strong feelings about it, so if there is a strong argument that lots of people know then it is surprising that no-one has written it up properly.
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