"10" Types.

Well, you've got interactions of dissimilar habits, which is one of the most worthwhile things to address.

Then you have the advanced appliance which is somewhat likely to have been optimized for not exactly either one (or more) of the users' desired or even imagined scenarios or use cases.

So they all tend to use it differently, to different effect.

More than two types right out of the gate, the robot has it's say, with strong influence even when it's a simple automaton, from helpful to agonist.

Nature's way of influencing you to limit your feasting to special occasions . . .