Material progress, electricity rapid transit, awareness mastery through cinematic insights.. these are a mere drop in the ocean and very recent paradigm shifts of ground alerting magnitude. There are thousands of others be they soil sciences or the gutenberg press these make massive alterations in both the configuration of brain biochemical states and the plasticity to adapt even more rapidly.
I'll put it in a simple way even though it's not simple. Perspectives about long scale lapses of time or objective insights to how the sentient mind are concept vectors too nebulous for the efficient functionality of the axis of reasoning, the weight of emotive decision capacity and self control or understanding of and the external locuses required to encapsulate what even is the thing we call mind. Much less semanticise it accurately through speech or writing.
I think that humans have many built in natural traits of what is needed to intellectually and physically handle, if handle is a complete enough word, the changing world. Those that think otherwise are probably only a contingent that's present to remind us all how incomplete the past always was.
