They achieved it by making a lot of guesses, based on a huge amount of explicit and implicit knowledge about humans, computers and the world in general. The br

They achieved it by making a lot of guesses, based on a huge amount of explicit and implicit knowledge about humans, computers and the world in general. The brute-force approach described in the article, where you just randomly try lines of code without any other knowledge, won't make for a very competent programmer.