Food Engineering is a difficult branch of chemical engineering. You've got regulations, you've got people's lives at stake. The Soylent guys just went at it like a hacker: because thats what they are. They're taking the "startup culture" and trying to apply it to food.
And that is incredibly dangerous. Anyone who has any connection at all to the food industry knows that PEOPLE DIE IF YOU MESS THIS UP. This is NOT a "hackathon", and a SINGLE mistake can accidentally kill someone.