My statement wasn't a resultant of taking the class, I had come to that conclusion way before that. I'm aware that the population model can be called into question, but it was something leading researchers have been working on and adjusting since the 1970's. They are the experts on the topic, our professor was merely relaying the information. Regardless, I stand by my statement that rationing of water/food/energy is going to creep up on us a lot quicker than many people realize.