I remember automating the lights in my house decades ago (the X10 era!). The first time I had someone over, I got into bed and hit all-lights-off, only to hear

I remember automating the lights in my house decades ago (the X10 era!). The first time I had someone over, I got into bed and hit all-lights-off, only to hear "Hey! I'm in the bathroom and all the lights just went out!"