'yeah, maybe there's a perfect copy, but it'll never really be you, it's only a copy waking up'.

Not everyone buys into this philosophical point of view, and if continuity of identity were the only technical objection left, I think that hundreds of thousands of rich, well-educated people with a scientific mindset would sign up.

I think that lingering doubts about whether preservation actually works are still a significant barrier in the "filter funnel" of cryonics.