The Open Thread posted at the beginning of the month has gotten really, really big, so I've gone ahead and made another one. Post your new discussions here!
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
I too have a proto-theory. My theory is that humor is when there is a connection between the joke & punchline which is obvious to the person in retrospect, but not initially.
Hence, a pun is funny because the connection is unpredictable in advance, but clear in retrospect; Eliezer's joke about the motorist and the asylum inmate is funny because we were predicting some other response other than the logical one; similarly for 'why did the duck cross the road? to get to the other side' is not funny to someone who has never heard any of the road jokes, but to someone who has and is thinking of zany explanations, the reversion to normality is unpredicted.
Your theory doesn't work with absurdist humor. There isn't initially 1 valid decoding, much less 2.
I love absurdist humor.
How many surrealists does it take to change a lightbulb? Two. One to hold the giraffe, and one to put the clocks in the bathtub.