Take a look at your teeth in a mirror. Those chompers haven't evolved to chew cud. Like the pig, which some would say resembles us in other ways too, we are omnivorous. We can survive on just about anything, but we thrive on variety.

It was probably our turn to the high fat and protein diet of meat, and not least bone marrow, which both made possible and made necessary the evolution of our larger brains.

Is it possible to survive on a purely vegetarian diet. Yes. Is it advisable, especially while growing up? A bit more doubtful. We're then moving into the need for dietary supplements and pills.

And having participated in my share of slaughtering of pigs through my childhood, and smelled what they smell like on the inside, still I'll happily fry up a pork chop.

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