First: Its only 'cheap' because Wheat is an almost universally subsidized crop in most of the World. Which means the farmers externalities are obscured in what is actually a ubiquitous but environmentally challenging crop to grow in terms of land use, and irrigation. Harvesting, too if you don't have access to modern combines and want viable yields. Not to mention growing practices themselves and if its a GMO crop its often sprayed into oblivion with all kind of pesticides that cross contaminate and pollute water supplies and kill local insects and soil bacteria, microbes, and unsettle the flora/fauna.
Second: The USD-GBP bushel parallel is also not correct as neither are what they were meant to actually represent since becoming fiat: A pound sterling in the case of GBP, and grains of silver (371.25) in the case of USD. The measurements are off for the analogy that you're trying to make.
First: Its only 'cheap' because Wheat is an almost universally subsidized crop in most of the World. Which means the farmers externalities are obscured in what is actually a ubiquitous but environmentally challenging crop to grow in terms of land use, and irrigation. Harvesting, too if you don't have access to modern combines and want viable yields. Not to mention growing practices themselves and if its a GMO crop its often sprayed into oblivion with all kind of pesticides that cross contaminate and pollute water supplies and kill local insects and soil bacteria, microbes, and unsettle the flora/fauna.
Second: The USD-GBP bushel parallel is also not correct as neither are what they were meant to actually represent since becoming fiat: A pound sterling in the case of GBP, and grains of silver (371.25) in the case of USD. The measurements are off for the analogy that you're trying to make.