There has been more, um, marking. Ok, peeing on the carpet in the front entry. New behaviour, and distressing. We're getting some better deodorizing product, hoping that will help. One of those weird things. We aren't angry, just confused, and tired. Saw a segment on training cats, and wonder if that might help. Boredom can contribute to all kinds of strange habits. Before, he's had to move yearly. This is the first place he's lived more than two years. He's never been otherwise destructive. We'll also completely clean the litter boxes.
D found this for me. The Dunning Kruger Effect. Explains so much about why dumb people are so ... blasted impenetrable and annoying.