The experiment as a whole seems somewhat uninformed, there are many liquid diets intended for long term use which have been developed scientifically and the results of which have been studied for decades. I guess this is good for his own personal discovery, but I think his goal is also around making money... in which case if I were in the market for a liquid diet I would rather something that was designed by nutritionists, taken by thousands of patients,and scientifically reviewed... rather than a learn as you go tested on one individual

Over and over again, I'd listen to someone's story of how back pain meant they could no longer work, or how a shoulder injury had put them out of a job. Then I would ask: What about a job where you don't have to lift things, or a job where you don't have to use your shoulder, or a job where you can sit down? They would look at me as if I were asking, "How come you didn't consider becoming an astronaut?"

Wow, talk about being disconnected from reality.

Sugar beet field weeding used to be done by teams of migrant workers with handheld hoes. I think they've figured out how to not have the weeds in the first place with better pesticides. Most fruits and vegetables are picked by hand.