I had an argument with my mother about this. I had the obvious thermodynamic argument. Maintaining a gradient costs energy, heat flow is proportional to differe

I had an argument with my mother about this. I had the obvious thermodynamic argument. Maintaining a gradient costs energy, heat flow is proportional to difference. So obviously let the house heat up and then set the timer to cool off about an hour before you think youll be home. She said some nonsense about the a/c "working harder". She simply didn't have good physical intuition or training and couldn't be persuaded. People make the same crappy arguments about the food you eat. They say, "CICO can't be right" but like, how could it possibly be wrong.