Do you trust scientific studies? I try to think carefully about how they're run before I do. A group of researchers have published a fake study to highlight some of the problems in this area.
The study claimed that kissing children's injuries better doesn't work. But mums and dads know that kisses are great healers. This reminds us that personal experiences and knowledge are often not taken into account in experiments.
While it seems funny at first, I think using a made-up study is a clever way to get a point across.