Actually, this is closer to what I meant. I simply think some people will NOT allow themselves to move on, and will try to prevent anyone else from doing so. They will have to be left behind, since it is not ethical, to me, to force people to do things, even if 'it's for their own good'. The thought that someone would not take up the chance to better their lives sounds sad, but it's quite common.
>From: "Eliezer S. Yudkowsky" <email@example.com>
>Subject: Re: Breatharians?
>> If any of us are going to make it to
>> trans/post humanity, some of us are going to have to be left
>> sounding, but that's life.
>If I can rewrite the entire planet on the molecular level, I can deal
>with human stupidity as well. Nobody *has* to be left behind. The
>real question is whether ethics requires that everyone be given the
>*option* of staying behind.