In Heinlein's _Stranger in a Strange Land_, Mike, the human born on Mars
and acclimating to Earth conditions, had, one day, a succession of
experiences tying his shoelaces:  between two shoes, and on one show.
When asked what he had learned in the day, he replied he had learned two
ways to tie his shoes. One was good for walking, and one was not.

Last week, my computer monitor died.  To be more accurate, the VGA cable
failed where it entered the chassis. Unfortunately, cheap monitors don't
do the smart thing and have a jack on the back, so the cable can be
replaced rather than the whole monitor.

Anyway, I replaced it with a flat-screen monitor, and my eyes have been
delighted.  Nevertheless, Rhonda, walking on my computer table,
apparently saw the monitor screen and did something she often did...jump
onto the top of the monitor, resting on its back.

Unfortunately, there is no longer a back.  I impressed myself by
catching a monitor in one hand and a flailing cat in the other. While I
did get one slight scratch, I think it was from the corner of the
monitor, not claws.

Cat and monitor appear to be operating normally at this time.