This started out as a comment:
There is a not uncommon intellectual deformation among us admirers of Dr Marx. We seem tempted to believe that because the old Moor gave us some very important insights into the big picture of history, we must therefore be able to divine in detail what’s going on in the streets of a city halfway around the world, though we don’t speak the language, we’re not present, and our sources of factual information are next to useless. Perhaps even worse than useless, come to think of it.
It occurs to me that this is under-generalized. Isn’t this in fact the besetting sin of our time? Isn’t it also the problem with sociobiology, and ‘evolutionary psychology’, and so on? Aren’t there those among us who are shallow, dogmatic Darwinians in just the same way that many of my Lefty comrades are shallow, dogmatic Marxists, always trumping each other with proof-texts?
Surely there is nothing less ‘scientific’ than the belief that one has found an all-purpose answer for every question.
And yet, how we crave it!