Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of Very Few I Re-read Over and Over

I tend to blow through novels rather quickly. Hogan's interestingly-plausible description of backwards-in-time communication helped me to get into the book. The implications and re-dos afforded by that capability are fascinating. It's been a while since I've read it, so it's about time to do it again. Read this, it's worth the investment of your time.