Just so you know, this book was published in late 1996.
According to the ads, it analyzes the various combinations of final time, pace, finish postion, workouts and trainers. While I don't know the specfics, my guess would be that the results were backfitted to the database in order to come up with winning combinations. At best, it would be probably be a primitive forerunner of datamining, which is beaten to death nowadays.
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