I was walking to my car earlier today and reached into my pocket to get the car keys. While pulling them out I spilled everything that was in it: some change, a couple of business cards, my office keys. And I thought: where did people put these things before the invention of pockets? Of course, these things had not existed before pockets were invented, but it made me recall a day in Guinea when I saw a young fisherman collecting mole crickets for bait. He was catching them, piercing them with a piece of plant fiber, and then weaving the fiber into his hair. Brilliant!