The cargo container: it has changed the entire planet culturally, economically and geopolitically. It would be hard to count the percentage of every day objects most people use world wide that owe their availability or existence to that standardized metal box.
Sure but having a massive steel box that can be craned onto a truck or train provides a lot of value. So does the fact that the boxes are indistinguishable and locking. Theft by stevedores used to be a massive global tax on trade.
