ASK BK
I can't remember if this was discussed but before you wrote Thrill Ride were you are of the "Bootstrap Paradox."?
In case DR Readers don't know what it is here is an example involving Albert Einstein
"An example of a bootstrap paradox involving information would be if a time traveler went back in time and taught Einstein the theory of relativity, before returning to his own time. Einstein claims it’s his own work, and over the following decades the theory is published countless times until a copy of it eventually ends up in the hands of the original time traveler who then takes it back to Einstein, begging the question “where did the theory originate”. We cannot say that it came from the time traveler as he learned it from Einstein, but we also cannot say that it is from Einstein, since he was taught it by the time traveler. Who, then, discovered the theory of relativity?"