I try to do my purchase's based on scientific research methods. There needs to be benchmarks that you can use to compare the products. That is however problemat

I try to do my purchase's based on scientific research methods. There needs to be benchmarks that you can use to compare the products. That is however problematic for some products, such as books. What's even worse then fake reviews is fake bad reviews where competitors give your products a low rating. If your first review ends up bad you are screwed, unless you get 100 good reviews to compensate.