First, even if that were true, it would not be a fatal flaw. Second the report makes no causal inference and even points out that such an inference is very diff

First, even if that were true, it would not be a fatal flaw. Second the report makes no causal inference and even points out that such an inference is very difficult to make. Instead the study controls for a variety of factors such as family background, geographic location, demographics, health and age.