renewable resources?

--- In spacesettlers@yahoogroups.com, Matt Gallimore wrote:
>
> --- On Sat, 6/6/09, Dan Wylie-Sears wrote:
> "The point as I understood it was that if we have a collapse, future civilizations will have it much harder than our ancestors did. Our ancestors had to travel if they wanted both coal from outcrops at the surface and high-grade iron ore at the surface. But for our successors trying to climb the same hill from stone age to space age, there will be no outcrops of high-grade coal and high-grade iron ore anywhere."

would it not depend upon how we collapse - if we can retain enough pockets where knowledge is kept then it should be easier to come back and it may force us to accept a lower standard of materialism - if there is space developements would it not be better to do the industrial work in space and keave earth as a garden/ preserve = they can always send their best and brightest for a trade -