But seriously, why didn't communism triumph in the 20th century when things were looking so good? If the russian revolution and chinese revolution can succeed, liberating 800 million people, 1/3rd of the world's population, defeat the nazis, why couldnt we finish the final stretch? What was the fatal flaw?
In which book does he actually go over how a socialist/communist government should work at any detail? It's not in Kapital and the manifesto has less than a page on it. I know he wrote other works but I'm not sure which has that.