Cat wins, every time.
Just spent 3 hours working on course; Daughter #2’s cat–which I am babysitting–leapt off mantle, onto my shoulders, onto my keyboard, and hit a key which I had never before had cause to notice.
Result: Computer turns off.
I have control over the computer, but not this blasted cat.
In the battle of nature v. man, nature wins every time. Good lesson to learn.