I'm exceedingly, ridiculously grateful that it was cooler yesterday and cooler still today (and is supposed to be 89° tomorrow). Part of that is because I might have been a bit premature in declaring myself the winner of the a/c battle. While Dad did indeed turn it on last Wednesday, it was only on for a few hours, until the sun went down. Then he threw open the windows and turned on the fan. It remained under 80° inside but only just. Then he didn't turn on the a/c again until Saturday afternoon, while I was out...and he set it at 80°. 80! Might as well not even bother.
Again, I could turn it on if I wanted to. But now I'm taking a certain amount of pride in sticking it out...