I keep my book review ratings simple—they’re either required, recommended, recommended with qualifications, or not recommended. If you want the TL;DR, this is it: Recommended: In want of a bit of classic sci-fi, I recently picked up Larry Niven’s Ringworld and read it this week. I enjoyed it, but more than that I find it hard to say. I’m still not sure exactly what to describe it as: an exploratory high concept romp, maybe. The characters were fine, the plot serviceable, and the two h...