It's added by AE2, not EE3, so it's designed to be learn able so you can use EMC to make everything in the mod. Lazy devs = lazy gameplay
pahimar deliberately added the possibility to make each and every item in the game impossible to pull out of the transmutation table, the list of those items can be edited by say, server owners or players who don't want dupes in the game. that is what i meant. does nobody here watch forgecraft? they talked about the stuff in EE3 there.