A lot of the arguments here seem to boil down to "Much smarter people are working on this and they haven't solved it, who the hell does this KID think he is?!?"
That's pretty depressing for a website that, at least originally, was to help startups talk to one another. Shame on you, hacker news. You're smarter than this. By this logic, never ever trust your data to anybody other than IBM because those dumb hacker kids don't know what they're doing!
Second: "He's violating ALL KINDS of FDA regulations! [none of which I can name]"
Oh is he? Because if you actually look at what he's doing, it appears that he is taking things are already approved from human consumption, and mixing them together. This would be akin to a baker taking eggs and flour and mixing them.
What he's selling (although selling is a bit of an incorrect word here) is effectively a big power bar, except his comes in powerdered form. There are some hippies that sell power bars at my local coffee shop. They are terrible. What sort of advanced degrees do you suppose the hippies have? None? Possibly some experience in "baking"?
Finally: this is being presented within the context of "an experiment". If you start eating soylent, and you get sick, STOP EATING IT!
I'd imagine that I might have similar results if I ate nothing but the hippie vegan power bars at the coffee shop.
Personally, I'll be in for whatever the $65 level is.
1) Because I think this is neat
2) I want to encourage people to experiment with the world around them.
3) I'm not an idiot, and if I start feeling sick as a result of not eating any "real" food, I'll stop eating soylent.
Geesh.