As electricity began to light our world, resistance came from curious corners. “God had decreed that darkness should follow light, and mortals had no right to turn night into day,” wrote one German newspaper. “A lamp for a nightmare,” declared a Scottish poet. And Thomas Edison, the inventor who gave us the first commercial light bulb, tried his hardest to make people fear a competitor’s form of electricity. But here’s the strangest thing of all: Edison and his ilk failed quickly; their fearmongering just never stuck, and electricity, unlike every other innovation we’ve explored on this show, easily expanded into our world. Why? To understand that, we have go way back — to the very first spark.