Habitat for Wildlife's Link
If you cross reference it with various philisophical, sociological and psychological developmental "stages", there are additional layers which relate to those same points.
It is interesting the "chart" seems to skip the mid-late 60's and early 70's, which admittedly I've only read about having been born in 74, but which sure seem to have come with a lot of big, big challenges that would suggest a substantial social, emotional, financial challenge to society during that time frame - not reflected in the chart.
I'm pretty optimistic though, and have a lot of trust in humans... So I feel like, even if we are tangling with really extreme social upheaval at the moment, I believe it can get better. So maybe by bias is just riding through the "cycles"...
To many stops in place now for a 1929 type of collapse to occur now than a depression era.
only a total collapse of the electrical grid would cause major upheavals, but even that would be brought back quickly.
I don't see it on the horizon.... besides, I'll be living off the grid in about a year....