Someone has to have root servers that serve the children of the TLD...where would those be looked up? The closest you could do is assume a TLD (i.e. .com) if it

Someone has to have root servers that serve the children of the TLD...where would those be looked up? The closest you could do is assume a TLD (i.e. .com) if it's not typed, but then you harm the non-.com names. It needs to be a tree where roots are controlled.