This doesn't contradict warnings that our current agricultural systems are prone to sudden collapse. Soil erosion, water pollution, changing weather patterns, a

This doesn't contradict warnings that our current agricultural systems are prone to sudden collapse. Soil erosion, water pollution, changing weather patterns, and over reliance on fertilizer and pesticides in a monoculture environment could cause a precipitous drop in yields over just a few years. We may be over spending from the credit card, so to speak.