Missing wiper blade but other one still works

I am not saying women and cars don’t mix, I am saying the women in my house and cars don’t mix. My wife reports that the wiper blade flew off while in use leaving only the bare metal which was scraping across the windshield. I asked why didn’t you turn it off. Response it was still raining and the other wiper worked. Needless to say that I now have a nice scratch across the windshield. Sigh