If you're going that far perhaps factor in the costs of drilling and shipping fossil fuels on the other side ... admittedly it probably is a factor or so less t

If you're going that far perhaps factor in the costs of drilling and shipping fossil fuels on the other side ... admittedly it probably is a factor or so less than the proportion associated with foodstuffs - but - the foodstuffs side has plenty of room for optimisation whereas the fossil fuels side is on a degenerative trend