Actually, the recent posts on cryonics have dug up new information, some of which contradicts Eliezer's earlier assertions. The cost of cryonics has been established as much higher than $300/year for some people (e.g. myself). The difficulty of signing up if you live outside the US has been highlighted. The strong opposition of a mainstream group of scientists, cryobiologists, has been brought forward. Our best efforts to uncover actual evidence against the basic science (ciphergoth's current focus of inquiry) have not yet succeeded. But we keep going.

Your argument from utility has received responses, for instance I have clearly stated that at $300/year I would jump to sign up, since I already spend at least that much on things that bring me a negligible increase in life satisfaction. The quote I have received is closer to $2000/year and that is large enough to give me pause, given that I currently enjoy an unreliable level of income as a freelancer.

But your argument is also an argument in favor, to anyone who has enough money that the marginal utility of $2000/year becomes insignificant so that the expected utility of longer life again dominates.

If you're going to call "groupthink" on the current discussion, I request that you hold yourself to at least as high an epistemic standard as the people who are participating in the discussion, and substantiate your accusation of groupthink with actual evidence and analysis.

Otherwise, "groupthink" can too easily become one of those reverse applause lights. What should we call them, "boo lights"? Are those used on TV? Anyway, I've seen people (here and elsewhere) use the word to cheaply establish their status as a skeptic, without actually doing any critical thinking or even basic due diligence. That devalues the technical meaning of "groupthink".

We want the term groupthink to still be useful when we really need it - when we actually succumb to groupthink.