Mr. Simon, Marx wasn't writing economics or science fiction, he was writing shit. He was distributing wealth across the globe, throwing goods at the ignorant masses, surprising the pool of poor with values. His mind was working in the highest gears - but it was in all his mind - all theory. He stayed in a room and never did an ounce of good in this world or helped a single person. His succesors brought his theories to nightmare.
He is not worth the T-shirt, let's not be more crazy or academic about it than he was.