[PatrickHenry]

... like you, I have my doubts that entropy continues to increase with each bounce.

I've read -- this is 2nd hand only -- that back in the 1930s, someone named Tolman showed that entropy increase was inevitable for a continuously oscillating universe. The reason I'm dubious is that I don't know where the "lost" energy/information would go. It's all got to be preserved in a crunch for yet another performance of the cosmic show. Or so it seems to me.

[Poohbah]

I dunno about Black Crunch jamming anything. A scoop is very tasty and goes down nicely with a scoop of Mint Fudge and a scoop of Strawberry Vanilla.

[Moonman62]

I've read -- this is 2nd hand only -- that back in the 1930s, someone named Tolman showed that entropy increase was inevitable for a continuously oscillating universe. The reason I'm dubious is that I don't know where the "lost" energy/information would go. It's all got to be preserved in a crunch for yet another performance of the cosmic show. Or so it seems to me.

Energy doesn't get lost or go anywhere outside our universe. It simply gets redistributed very evenly, so that work becomes impossible.