Can we Re-Build Civilisation after Collapse.

[John]

Yes you can canibalise short term only, eventually it will all run out but to jump start, I don't so. We would not have the capability or numbers.

What happens when those picks, spades, axes, and the alike wear out, break etc.?

Sea water, just models thus far and all in all probability like the electric or new hydrogen cars, totally cost prohibitive and so will slowly die.

Knowledge to start up a furnace. You may be fortunate and Blacksmithing would be easily doable. May be to some but that all depends.

'Could I create one? I doubt it'. At least your honest but if can't that means you are hoping to reply on someone else. They may not be there.
'Could the human ingenuity do it?'
I doubt it again you are hoping that something will happen. It hasn't yet and that is before we crash and I really doubt it will.

Plan for the worst and hope for the best. I see this as hope for the best but no plan, no thought for the worst. I wonder sometime if man has got too big for his boots.

As for man, there is little reason to think that he can, in the long run, escape the fate of other creatures, and if there is
a biological law of flux and reflux, his situation is now a highly perilous one. During ten thousand years his numbers
have been on the upgrade in spite of wars, pestilence, and famines. This increase in population has become more and
more rapid. Biologically, man has for too long a time been rolling an uninterrupted run of sevens.
Earth Abides
George Ripley Stewart 1949

May we should just wrap this a agree to to differ. We are not going to know probably in our life.

It may well be life, Scythe, but not as we know it?