The Great Change is when humankind accepts its role as part of the natural order of the universe instead of its role as a cancer
Although he was a young and virile man at 37, he was not inexhaustible. In addition to food and drink, he had better lay in a couple thousand tablets of viagra. The drug would probably remain potent if he vacuum packed the pills in groups of 10 and kept them in a freezer. That would work unless civilization completely collapsed and power companies were unable to function. Fortunately, Jim had a propane-powered backup generator with half a dozen tanks of fuel already on hand. If Henry added to the propane supply, and he used the generator only for essential maintenance like keeping the viagra freezer operating in warm weather, he would be happy here on the farm for a looong, looong time. Unless, even now, dead Jim was out there in the generator shed sabotaging the machinery.