Raw food diet

Ask these guys:
http://altmedicine.about.com/od/popularhealthdiets/a/Raw_Food.htm

The aim of this article is simply to explain what proponents of the diet believe, as Ardicius says, it also reports some of what it's critics believe. It makes no attempt to explain the rationale behind the diet apart from the following statement:

Heating food above 116 degrees F is believed to destroy enzymes in food that can assist in the digestion and absorption of food. Cooking is also thought to diminish the nutritional value and "life force" of food.
Which it provides no justification for. Is this the raw diet's manefesto?