Happily, neocortical pruning has the requisite long "growth curve" that the proximate mechanism would need if the three-part cycle is to be repeatedly used. The synaptic reduction curve peaks at eight months after birth in the current model of Homo sapiens, so further juvenilization in the fut...
If this were the prime consideration, of course, we would also have to conclude that car tires would never work because they all, sooner or later, go flat. We just pump them back up occasionally, and the cool-crash-and-burn cycle suggests both a concentration mechanism and a pump that m...