They stopped saying ‘I just want to make an arm that’ll get through the day,’ and started saying ‘I want an arm that does everything my old arm did.’ From there, it was a short step to ‘I want an arm that’s better than my old arm.’ And from there, it was an even shorter step to ‘I want an arm that’s so outrageously awesome that you’ll cut off your own to get one.’ That’s what’s coming to immortality. Not just the ability to come back from the dead, but the ability to rethink what it means to be alive. There’s going to be people who decide to deadhead for a year or a decade, to see what’s coming. There’ll be people with broken hearts who deadhead for twenty years to get some distance from their ex. I’ll bet you that someday we’ll look around and discover that all the kids are short for their age, and it’ll turn out that they’ll all have been deadheaded by their parents whenever they had a tantrum and were missing ten percent of their realtime