Because the absorption of vitamins depends strongly on the digestive context, including but not limited to the presence of food, fluids, fat, and other vitamins

Because the absorption of vitamins depends strongly on the digestive context, including but not limited to the presence of food, fluids, fat, and other vitamins. Some vitamins simply can't be absorbed together. And there's a laundry list of other poorly understood interactions as well - did you know that caffeine inhibits iron absorption (among others)? You can't expect to just throw it all together in a big bucket and expect to be healthy (something Soylent seems to utterly disregard). You need a balanced and varied diet. You just do. There's no compensating. And if you have one - why bother with the multivitamin? (Obviously specific supplementation where required is good and useful. I object only to the "mix it all together" approach as both unproductive and an attempt to treat a problem in the wrong place.) https://www.consumerlab.com/answers/Which+vitamins+and+minerals+should+be+taken+together+or+separately/how-to-take-vitamins/ https://www.consumerlab.com/answers/Which+vitamins+and+miner...