From the manufacturer

Nerd Alert! We named ourselves Four Sigmatic because when you compare how nutritious all foods are in the world, most foods are okay, a few horrible, and a few amazing. If you put these foods on a scale from average to good to bad, the further you get from your “average” food, the more rare it is, and more sigmas (σ) you have. Only 50 superfoods in the world qualify as “four sigmatic.” The best of the best. Those are the foods we use in our products for you! Easy?...uhhh no. But it’s a little too late to change the brand name.