No, we know people do fine on traditionally healthy food. We do not know whether they do fine on Soylent. My guess is that anyone 100% on Soylent will become malnutritioned either very subtly or over a long time frame. Personally, I think that's fine as the body can handle pretty fucked up diets and no one is really going to go 100% Soylent anyway. Like, I'd replace 80% of my diet with Soylent if they shipped to me and I liked the taste, but I understand why someone would be a little skeptical.