Cats have a
'flicker fusion rate' of about 400 hz, as opposed to
the human rate of about 20 hz.
That makes sense as my cat zooms around my apartment
20 x faster than me.
Here we go again...
OK. So if they see at 400hz, and we see at 20.... What do they see
that we don't that is so damned interesting on that wall over there?
-JR