Last week, I linked you to a piece pointing out that three New York Times op-ed pieces linking bacterial exposure (or lack thereof) to autism, celiac disease, and allergies were all written by the same guy, Moises Velasquez-Manoff. His ideas are interesting, but there’s also good reason to be skeptical. If you want to get a better idea of the arguments for and against Velasquez-Manoff’s thesis, I’d recommend checking out this post at the Knight Science Journalism Tracker, which links to several critical stories and to Velasquez-Manoff’s response to them.