With all the wonders of modern technology, we're used to knowing the exact statistical details of everything we do: how many steps we've walked, what our gas mileage is, our favorite athlete's stats, even how to measure our blood sugar levels or alcohol content. We’re used to having access to data points, and we expect it everywhere.
Yet one of the things we've tracked the longest, diet, is still one of our biggest mysteries. According to Gallup studies, half of Americans say they're trying to lose weight, but a quarter of us are confused about how to eat right. Nutritional labels can tell us what's in our food, but keeping track of everything we eat, much less what's in it, can be a major chore.