Upvoted for providing a nice way to visualize the Newcomb's box problem differently (given a model where the decider decides truly, it doesn't matter if the decision was made in advance or subsequently) - but I think the story would actually improve with a bit of trimming; removing the needless paragraphs about Cassandra/centipedes, etc.

Probably 4 or 5 paragraphs could be removed, making the point sharper.