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On March 10, 1876, Alexander Graham Bell was working in his Boston lab when acid spilled onto his clothes. He leaned to his prototype and said: “Mr. Watson, come here, I want to see you.” In another room, Thomas Watson pressed the receiver to his ear and froze as Bell’s words came through — the first human voice carried by wire. Months later, at the Centennial Exposition in Philadelphia, Bell set the prototype on display. Before a crowded hall, he recited Shakespeare: “To be, or not to be, that is the question.” Watson listened across the room as the words traveled clearly. The crowd fell silent, then erupted in astonishment, witnessing the birth of the telephone.