Yet randomness remains stubbornly difficult to understand. The problem is that our brains aren't wired to think about it. Instead, we are built to look for patterns in sights, sounds, interactions, and events in the world. This mechanism is so ingrained that we see patterns even when they aren't there. There is a subtle reason for this: We can store patterns and conclusions in our heads, but we cannot store randomness itself. Randomness is a concept that defies categorization; by definition, it comes out of nowhere and can't be anticipated. While we intellectually accept that it exists, our brains can't completely grasp it, so it has less impact on our consciousness than things we can see, measure, and categorize.