Great innovations don't seem to come from just iterated evolution or some big revolutionary leap. Instead it seems to me to come from a series of iterative evol

Great innovations don't seem to come from just iterated evolution or some big revolutionary leap. Instead it seems to me to come from a series of iterative evolutions followed by a revolutionary idea and a good execution in part of the problem. Often it comes from a sequence of these evolution->revolution chains. When that happens the initial execution of the revolutionary idea is usually buggy and incomplete, but works well enough to demonstrate the idea. Other people then evolve that idea further.