Increasingly, I think social limits to growth are occurring before strict resource limits will ever be realized (though the beginning of the latter had an influence on the former). As better data comes to light it is becoming apparent that we've been squeezing extra resources from the system via extended use of and confidence in, abstract fiat instruments, thus further decoupling our situation from longer term physical reality. Cheap energy has subsidized many things in human society; technology, leisure, peace, art, food, lifespans, spatial distribution, etc. But not often mentioned is its impact on social equality. I plan to write a more empirical, evidence based post in the future on this topic - tonight's Campfire questions will revolve around whether the future will bring more equality between and among human groups, or less.