Comment by Traster

What I'm not getting about this is how you check cause and effect. How do you know bad reviews cause restaurants to stagnate? Call me crazy, but maybe restaurants stagnate is because they're bad. They also get bad reviews because they're bad and people might not go to the restaurant becaues it's bad. There's no explanation in this article of how this is overcome. Also, they're talking about 0-4 reviews and 5-10 reviews. I could imagine that's the sort of number of reviews that restaurants' family and friends could be leaving when a restaurant opens.