Every once in a while I hear a story about someone who does something stupid, or gets in an accident, and thinks about or attempts to type a “Command-Z” (Control-Z on Windows!) into thin air. I just had one of those very moments.
I was sitting on the couch and reading a computer book. Suddenly I wondered what time it was, and subconsciously glanced to the upper right hand corner of the page. (Lower right corner on Windows!) But the time wasn’t there.