The solar system readily provides both the motivation, and the means, for technological colonization. It quickly pays and provides for its own utilization.
I do agree Musk's projections for biological/human colonization appear to be unrealistic. Just one challenge: it isn't clear humans can reproduce in non-Earth gravity. That is an extreme impediment.
The solar system readily provides both the motivation, and the means, for technological colonization. It quickly pays and provides for its own utilization.
I do agree Musk's projections for biological/human colonization appear to be unrealistic. Just one challenge: it isn't clear humans can reproduce in non-Earth gravity. That is an extreme impediment.