It would be easy to find thousands of people to volunteer to set forth on an ark that wouldn't arrive at another planet for generations. It'd be an enormous tec

It would be easy to find thousands of people to volunteer to set forth on an ark that wouldn't arrive at another planet for generations. It'd be an enormous technical challenge, and cost a fortune, so it's unlikely to be funded any time soon, but there's no technical limitation if the will is there. Some day the will may very well be there. I'm not endorsing the idea, nor do I think it's likely in my lifetime. It won't be necessary for the survival of the human race any time in the next billion years. That doesn't mean people won't want to do it eventually, if for no other reason than to explore. There was never any reason to climb Everest either, yet individuals devote their entire lives and fortunes to doing so. Just because we don't have to do it doesn't mean it's not something people will want to do. We'll probably become a hive-mind synthetic species long before anyone considers it, but if you call that human, eventually it'll get there.