In that text, I see no claim that he will bring millions to Mars. He just say we should want there to be millions.
The easiest way to get there is to bring a few thousand or even a few hundred people there and let nature do the rest (isn't there a short story from Asimov about this, where a lottery decides the composition of a 500-person star ship?)
Done that way, most of those millions would not be volunteering.
The easiest way to get there is to bring a few thousand or even a few hundred people there and let nature do the rest (isn't there a short story from Asimov about this, where a lottery decides the composition of a 500-person star ship?)
Done that way, most of those millions would not be volunteering.