Either listening to Paul McCartney makes you younger, or there’s something amiss with social science.

Would you believe a scientific paper that said listening to the Beatles song "When I'm 64" made people get younger? It was tested by experiment, and the result came out with "statistical significance," which is the gold standard for incorporating new findings into the established scientific literature. The point of the experiment was not really to test the youth-restoring effects of the song, but to show how too many dubious studies are getting published in respected journals.