...Always has been? Historically, farming founded the entire history of mankind lol. Your suggestion that the whole (farming) world simply give up their trade and move on...is about as condescending as my suggesting you take a deep breath and consider the livelihood of billions of people across, erm, planet Earth. A (very well researched!) scientific approach to global issues is indeed brilliant but the way you point it out suggests a this is fact, therefore you change approach. Your ideas work in theory, just as farmers own realities work for them, in practicality. Try analysing wealth distribution - if you really want to rock the world :)