Input (grade 9): "... there is certainly a lot of waste in the system... Unless, that is, we were to go back to subsistence agriculture..." Nevertheless, on-farm losses in storage in developing countries, particularly in Africa, can be high although the exact nature of such losses is much debated.
Output (grade 5): "... there is certainly a lot of waste in the system... Unless, that is, we were to go back to subsistence agriculture..."