Everything about it is funny. Humans are absurd, and Cat’s Cradle revels in the absurdity. It’s funny in the same way atom bombs are funny, that our species would hate itself so much as to make a weapon that could destroy us all, and like, we ignore it almost all of the time? Bokonon and the dictator becoming their roles is absurd, but aren’t people this absurd?

Also, there are a lot of chapters. Every single chapter break is there to let a punchline sink in. It’s a literary pause for laughter.