Wikipedia: Probability

Infinite Stupidity A Talk With Mark Pagel:
What I want to suggest is that any process of evolution that relies on exploring an unknown space, such as genes or such as our neurons exploring the unknown space in our brains, and trying to create connections in our brains, and such as our brain's trying to come up with new ideas that explore the space of alternatives that will lead us to what we call creativity in our social world, might be very close to random.