Constructal Decline
An aspect of the constructal theory that is less discussed on the list is that systems evolve to increase flow.
As the attached graph shows, volume on the S&P 500 (as reported in Yahoo Finance) has fallen all the way back to pre-covid levels, with a low point reached around August 14, no doubt to the detriment of exchange members and other top feeders.
Now there is a 100-point selloff. What better way to get people trading again on what otherwise might have been two very dull days heading into a holiday weekend?