If you are lost in the middle of the woods, you have a problem. Assuming that you’ve ended up in this predicament without any navigational aids or food, you’ll have to start walking. Any direction is better than none: if you stay put, you’ll starve. And, once you pick a direction, you better keep going: if you keep changing your mind, you’ll just go in circles, and you’ll also starve. Your problem, aside from the lack of food and abundance of predators, is in deciding which way to go: if all your options look the same, how are you supposed to decide? (read more...)