Re: Vision of the three Rs: Regular, Reliable and Reusable

Fred J. McCall wrote:
Ian Woollard <ian.woollard@xxxxxxxxx> wrote:

:Fred J. McCall wrote:
:> Would it really? We don't know that with any certainty.
:
:Beyond a certain point, do we know that any space activities are worth it?

No, we don't. That's rather the point...

No, what *would* make space activities worthwhile is if we can start to 'live off the land'. That requires ISRU. I've seen several schemes for starting to do ISRU, but the simplest schemes by far for starting to do that involves ice.

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