A hundred and fifty years ago 75 per cent of the working population in the USA was involved in food production. Today it is under 2 per cent (and according to the Australian Bureau of Statistics these numbers are similar in Australia).

It would be an interesting exercise to sit down with a town of 100 workers back in the day (150 years ago) and design how work would look if only two of them were now needed to produce the food for the whole town.