Over the years many have criticised Marx for many different reasons. A major criticism is that Marx supposedly was an economic determinist. Another is that he was promethean when it came to technology. Sometimes critics assert that Marx's economics were basically Ricardo's and Marx just made it a little more radical. Marxists reject these criticisms and argue that critics who argue along these lines do not fully understand Marx, it at all, and approach Marx's work and very complex philosophy in a very simplistic way.