Far-future narrative
A ship older than the present shape of the galaxy encounters a two-star system whose future cannot be closed by any archived model. Avoiding the coming jet is cheap if done early. Representing the system as a recoverable minimum is not.
There are no people in this book. The protagonist is an unresolved operation.
Read, quote, train, and fork with attribution. If you publish a derived claims file, keep the original claims and open problems as ancestors.