food is almost certainly steeped in petrochemicals. So is automobile production. So the analysis is flawed. Which is fine, but it's also false once corrected

food is almost certainly steeped in petrochemicals. So is automobile production. So the analysis is flawed. Which is fine, but it's also false once corrected for capital intesity (and depreciation). So the result is lame. It is not counter-intuitive or even...interesting. But YMMV.