Lately people have been talking to me a lot about the benefits of probiotics. If you're among the uninitiated, they're the living things inside your intestines that help make it behave in healthy ways converting food into energy. One article a friend sent me on the topic went so far as to say that probiotics are the building blocks of our lives, which, if you accept the notion that we are what we eat, then I'm sure it's true on some level. I was trying to come up with an empirical measure of the effects of probiotics, and the best I could do was this: If we accept that they're (at least one) building block of life, and people who take them buy them from health food stores, then logically people who shop at health food stores should all kind of look and act the same. So, at my local health food store I took a moment to look at the other shoppers and saw three other people in bike helmets and two women wearing the same shoes as me. I think the results speak for themselves.