Indeed, and to take the UI a step further, humans often prefer automation, if it works reliable. A complicated UI would become simple, just step into the shower.

There’s no complicated UI. You just turn a knob that sets a digital temperature readout.

If you want the shower to save your temperature preferences and start automatically, there’s no reason to build in a computer capable of running an AI.

But in reality you almost certainly don’t want a system like this because you don’t want an AI accidentally turning on your shower when you’re not home, when you do ok to clean it, or grab a razor, or when your toddler wanders in.

Granted an AI could try to determine intent, but it’s never going to get it 100% right. Which is why for physical systems like this you almost always want a physical button to signal intent.