I truly appreciate the idea behind Soylent. Long before they sold the product I was already making something similar on my own using the nutrient/vitamin/mineral quantities that the body supposedly requires.<p>Problem is, many of those quantities (specially vitamins) are a wild guess to medical science. If you go check the literature about certain minerals/vitamins you should consume, the values vary a lot, the effects on the organism from too much or too little aren't well understood, and worst, you can't be sure you are actually ingesting all the necessary types of vitamins/minerals/??? you need to have a healthy life... there are still too many unknowns.<p>I did that for about 3-4 months (every other weekend I would go to my parents home and had "real" food), and in the beginning I felt good, but after about 2.5-3 months I didn't feel so good anymore.<p>TL;DR: I really think that something like Soylent (this one, not the one from the novel) will be the future for a good part of mankind, but that will happen a long time from now when medical science and biology advance quite a bit.