Once upon a time there was an evil dictator of a small country. Rebel forces within the country fought for freedom of the people and repeatedly attempted to overthrow him. When he would find a village that was harboring the resistance fighters he would routinely cut off the electrical service to the village. However when that would happen, cargo planes would mysteriously appear over the villages and drop supplies to them. The parachute dropped crates contained rechargeable batteries and solar powered chargers. He ordered his army to investigate the source of these parachute drops. He suspected the American CIA or other outside forces were supporting the rebels. However his chief military advisor who happened to be a former electrical engineer reported to him that it was not outside influences but that “internal resistance was responsible for the voltage drops”.