Michael Crichton's Timeline, and The Relativity of Time

I'm currently rereading Timeline
, 1999, by the late Michael Crichton, famous for writing Jurassic Park and the Lost World. It's typical of this author, combining interesting scientific speculation and well-researched history, with a fast-paced plot and imperiled characters. As with many of his other books, this was made into a movie Timeline (2003)starring the late Paul Walker- of The Fast and