I don't think the average matters, it's the right tail of the distribution that's important.
Take, say, people with 130+ IQ -- that's about 2.5% of your standard white population and the overwhelming majority of them are not signed up. In fact, in any IQ quantile only a miniscule fraction has signed up.
entirelyuseless made the point that low cryonics use rates in the general population are evidence against the effectiveness of cryonics. James Miller responded by citing evidence supporting cryonics: that cryonicists are disproportionately intelligent/capable/well-informed. If your response to James is just that very few people have signed up for cryonics, then that's restating entirelyuseless' point. "The intellectual quality of some people who have NOT signed up for cryonics is exceptionally high" would be true even in a world where every cryonicist were more intelligent than every non-cryonicist, just given how few cryonicists there are.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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