When I ask someone their opinion about food, they either say "I recommend it" or "I don't." This "boolean answer" (yes/no, I agree/I don't, recommend/don't recommend) is normally given if I ask questions about food, movies, or any other consumable (media or otherwise).
If that seems to be the trend, why does Yelp have a star rating? Why not a "200 recommend this" and "5 do not recommend this?" Is it that a star rating allows people to go into detail? The issue I have with this, is that you're ultimately trying to get a recommendation (or not) from a peer so a star rating seems detached from that.
I guess my question is: Why is it that there are still star ratings on consumables when ultimately the user is looking for a boolean answer, and why isn't that being reflected in a more boolean like rating system?