[systemtest]

I feel like presence detection is a better option for lights.

Stumbling in the dark waiting for Echo to process your command versus just having the lights turn on when you enter a room.

[wmeredith]

I disagree, here. I may not always want the lights on. I prefer voice control to motion detection.

[Zombieball]

Yep. Same here. You want to be able to explicitly turn off the lights (say when you go to bed). Not have to wait for some timer to expire.

I suppose if the motion sensors had some extreme AI and could detect when I would want the lights on or off and make that decision before I verbalized it. But I'd probably want the voice interface as an override when the AI gets the wrong answer.