<i>As a science I find nutrition grossly deficient</i><p>Imo it&#x27;s not really the science itself, but rather the results which are deficient and the article lays out pretty well <i>why</i> that is. That, combined with the <i>huge</i> amounts of pseudo-science and almost-religious takes on what and how to eat (esp. by people who read a popular food book and think it is The Sole Truth) definitely creates an image that the whole of food science is utter BS.<p><i>It seems that something like this would be at least as good as food diaries</i><p>It would be relatively easy to test properly how correct the calory estimate is. Which wouldn&#x27;t be bad maybe, I know a bunch of people who sort of swear by it for estimating clary intake. (not sure if it&#x27;s the same app, but they definitely use something like it. And also tend to think everything it says is 100% correct..)