Yet another great quote from Bret Victor in his back-to-the-future talk, “The Future of Programming”:
“The most dangerous thought you can have as a creative person is to think that you know what you’re doing. Because once you think you know what you’re doing you stop looking around for other ways of doing things. And you stop being able to see other ways of doing things. You become blind.”
(the quote starts around 31:20)