On HN, we need to do better than the internet trope of dismissing a study with a single drive-by, usually obvious objection. No doubt there are a lot of bad studies, but bad studies plus bad comments about them is worse.

We should inhibit the impulse to dish out snark for the brief thrill of feeling smarter than an author or researcher, not because they don't occasionally miss the obvious (who doesn't?), but because it lowers the standard of discussion here.

A better way to present such a comment might be as a question: "In my experience, X. Does the study Y?"