Yeah, I know. I was being a bit facetious with the title. Generally that's the rule I've personally found though, but others can work with their own personal tastes. I've just found a lot of the more 'out there' titles range around this area, and the same can go for Rotten Tomatoes. It's only to be expected when something's taking a risk creatively, in that it's not going to be for everyone and the scoring will reflect that. I mean, I don't always automatically like the creatively risky books myself.

But I agree about selection bias. Certain titles are going to be found by certain audiences, sequels especially so.