I agree with igmistro. It is a piece of speculation, proposing a theory. Nothing more. I don't think it can be portrayed as anti-raw food propaganda.
How could the theory proposed be falsified? I would be interested to see a study comparing the mental abilities of people on a standard diet with those on vegetarian diets and those who include a lot of raw food in their diet. If meat eaters or cooked food consumers do have mental resources greater than people who are not then the theory might be correct.
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