Comment by alwa

Aren’t we so, so, so far from physical limits though? To the point that we speak of likely energy reserves in terms of centuries of consumption at current levels, even if we only get around to proving the next couple decades’ worth at a time?

If Musk et al get their wishes, and we become “spacefaring civilization” or whatever—aren’t the conceivable physical limits of known reality so far away as to be irrelevant?

And isn’t the story of the industrial era one of compounding productivity per unit of labor?