As you wander along the sidewalk your mind also wanders. You think about your ancestors exploring the forest, foraging for nuts and berries and hunting wild game. But you're looking for something different. Suddenly, something catches your eye. You hurry over to inspect it. Bending over, you think to yourself: "Oh wow, this is a good one!" A confused stranger looks up from their phone and rolls their eyes. They don't understand that this mayonnaise packet is worth a lot of money on the internet.