Users will have to acquire some basic vocabulary on their own, or the language of interaction just won't be rich enough to talk with them. They only need a few

Users will have to acquire some basic vocabulary on their own, or the language of interaction just won't be rich enough to talk with them. They only need a few simple things, like long touch or double click. Anybody born after these conventions are introduced will never remember how they learned them, they'll just be second nature. Early adopters may suffer a bit before they stumble on them.