It was quite the paradox!
It both makes sense and doesn’t at the same time but eventually the punchline might ring a bell.
Pavlov’s dogs and Schrodinger’s cat?
There’s something there, I think, but it doesn’t land as is.
I sat on it for a while and came up with this:
Pavlov and Schrodinger were flying together to a Thinker’s Convention. Their plane lost power and, in effort to make a safe landing, the pilot dumped their cargo.
For citizens below, it was raining cats and dogs.
Being mysterious doesn’t help me I’m afraid. Still don’t get it. The punchline doesn’t make sense and doesn’t ring a bell.
The fact that you haven’t just explained the joke makes me think you can’t because it doesn’t work as a joke. Right?
They are doctors who have paradoxical theories (pair of docs) but after some research Pavlov’s theory of conditioning is not a paradox so the site I ripped this joke off of may have used the wrong doctor.