Even if you're improvising, the fact that beforehand you know certain things will work helps you make those improvisations successful. It really helps to have a certain amount of knowledge about musical structure.
“Even in 2012, if there's a black character in the movies or on television that's a professional, if we even hear about their backgrounds they're always 'up from the streets.'”
“The problem with allowing God a role in the history of life is not that science would cease, but rather that scientists would have to acknowledge the existence of something important which is outside the boundaries of natural science.”