I understand his point, but I think he supports it poorly. Of course a product that has 1 review is not likely to benefit greatly from that single review. But when I buy a product, or book a hotel, I look at dozens of reviews from other people and I get a good sense of the pros and cons of what I might buy. I can then gauge those perspectives against what is important to me. And I find that overall they are almost all correct -- in aggregate.