Isaac Asimov's Robots in Time : Predator

I may have really enjoyed this book if I had read it when I was 11 or 12, but I still think that the illogical behavior of the main characters would have driven me nuts. For one example early on in the time travel portion of the book the team is afraid of altering the present by such actions as killing vines, breaking branches to mark a trail later in the novel with no regard for the repercussions they start a dinosaur stampede.

The reason I think a younger reader may enjoy it is as a kid I really enjoyed Cowboy in Africa, and the roping and riding of dinosaurs reminded me of it.

This book is for younger readers, not adults, hence the 2 star rating. I'd rate it higher if I was younger.
http://www.scifi-review.net/robots-in-time-predator-by-william-f-wu.html