Imagine waking up tonight and reaching for the lamp beside your bed, only to find nothing but a cold, wax candle. Imagine a world where the motion picture never flickered to life, where the phonograph never captured a human voice, and where the industrial age was stalled in the shadows of the nineteenth century.   If you removed Thomas Edison from the timeline of history, the modern world would go dark. We wouldn't just lose the lightbulb; we would lose the vision of a man who held ove...