My wife has an advanced degree in a non-STEM subject. It was not immediately obvious to her that, left in a closed room, a nice cooling fan will *heat it up* while you're out.
I whipped out my phone and asked Claude to diagram. It did a bang-up job and she groked immediately.
Unplug the fan for a cooler room. Then return and re-start the fan that blows on us moisture-covered meatbags to cool *us* down -- at the expense of heating the rest of the room.



