Or perhaps look at it differently, phrased “what could we have done then”, and see if anything is still relevant. Not to fix it, I think we’re far too along now, but we can still take measures to reduce the total impact in the far future and adapt to what’s coming. My first suggestion sounds simplistic but it’s the hardest thing to do for some people - reduce consumption of everything possible. Had we slammed the brakes back then on consumption and growth, it would be a different world and would have bought us more time (I think we still were in trouble even with an optimistic reaction).