Have we actually had much in the way of mental challenges on an evolutionary timescale? It would appear to be a reasonably recent phenomenon. I think I heard Jo

Have we actually had much in the way of mental challenges on an evolutionary timescale? It would appear to be a reasonably recent phenomenon. I think I heard Jordan Peterson comment that a couple of hundred years ago, most people were piss poor working in fields, so a high IQ didn't actually gain you very much.