The above image is a screenshot of an article from io9.com. Yes, the title is completely accurate. John Bohannon writes,
My colleagues and I recruited actual human subjects in Germany. We ran an actual clinical trial, with subjects randomly assigned to different diet regimes. And the statistically significant benefits of chocolate that we reported are based on the actual data. It was, in fact, a fairly typical study for the field of diet research. Which is to say: It was terrible science. The results are meaningless, and the health claims that the media blasted out to millions of people around the world are utterly unfounded.
At first glance, to the non-scientist, Bohannon’s assertion may seem very strange.
I know what you’re thinking. The study did show accelerated weight loss in the chocolate group—shouldn’t we trust it? Isn’t that how science works?
That’s certainly how modern education has taught us to think. The problem is, you can’t trust the results of a study if you only know the results. You need to be able to see the process. We might call this the Weasley Principle, following the words of J. K. Rowling’s character Arthur Weasley: “Never trust anything that can think for itself if you can’t see where it keeps its brain!” It’s quite easy to get whatever result you’re hoping to get if you let your results influence your process. Read more










