I salute people who operate hardware shops. They have to know every nut and bolt, universal joint, hooks and brackets, and etc. If I were to open a hardware shop or to manage one, I would not be able to remember each and every item in the shop. If I couldn't remember every item, what would happen if a customer walks in and asks for something that I do not know? Hence, I think everyone has his or her own strength and would do well in certain areas.