Random walk

A random walk is like a game where you take steps without knowing where you will end up. Imagine you're in a forest and you close your eyes and pick a direction (say, north) and take one step in that direction. Then, you open your eyes and close them again, pick another direction (say, west), and take another step. You keep doing this until you get to the end of the forest. That's like a random walk. The path you take is completely random and you don't know where you're going to end up.