I think we are talking different timescales. I see our system eventually failing - mostly because of the growing disparity between the haves and the have nots. We are already seeing a marked decline in real wealth amongst most in Western society - and this has been happening for a long time - masked by cheaper consumer goods and increasing efficiencies. We also need to accoutn for increasing automisation, that will make many jobs defunct. Whether 50 years or 200 - I think we are going to see massive and fundamental social change - after all there is a pattern of this throughout history.