"But we do know about nutrients and have a good idea of the proportion of them for the avg human." We really, really don't. You could be excused for thinking

"But we do know about nutrients and have a good idea of the proportion of them for the avg human." We really, really don't. You could be excused for thinking we've got it all figured out if you listened only to news reporting on nutrition studies, but there's so much contradictory information out there that it's difficult to know which end is up. For example: Soylent, according to the story, is partially fish oil. Did you know that there's a study out of the Fred Hutchinson Cancer Research Center that strongly suggests that fish oil supplementation increases the incidence of aggressive, fatal prostate cancers? What was once a nutrient panacea is likely now contraindicated in men. Does this mean that Soylent shouldn't be using fish oil? Hard to say. I doubt that even the creators have any idea.