Trashology follows the Marmalade Sandwich Principle. One of the most notable (and possibly the only) Trashologists is Domovoi The Third. It studies the idea that, since all things that have just been made are new and all things (eventually) end up as trash, therefore all trash is new and people that recycle are just using the "new" item in a different way. The theory is largely propagated by gentlemen with large beards who eat mouldy sandwiches out of rubbish bins.