If you just make up numbers you can justify just about anything. Let us add in some more external costs to these imaginary numbers. What does it cost to get th

If you just make up numbers you can justify just about anything. Let us add in some more external costs to these imaginary numbers. What does it cost to get the petroleum used to manufacture the pesticides, chemical fertilizer, etc. used in conventional farming (cough cough war in Iraq)? How much does it cost to transport food around the world instead of growing it locally? What are the costs to public health from superbugs bred in feedlots full of sick, bloated cows inundated with antibiotics? I will now make up imaginary numbers for these costs large enough to trump your imaginary numbers. P.S. If you want some real numbers and facts, you should check out Michael Pollan's "The Omnivore's Dilemma", especially the citations in the back of the book. It's also a damn good read.