What do you think of using the liquid diet for weight loss?

I too saw the movie “Fat, Sick and Nearly Dead” but I have to say he was injesting calories that were once in the form of “food” and his point was really great however:

A liquid diet is a reflexion of how impatient our society has become and how “lazy” our society has become when it comes to health

It’s all about the quick fix

How about eating real food and daily exercise!!???