When imaginative scientists first suggested the possibility that one person could speak directly to another over a long distance, few people took them seriously. Among the few who did was a Scots-born American named Alexander Graham Bell, who was one of the first to develop a telephone in 1876. Now the most common means of voice communication in the world, the telephone of today, is infinitely more sophisticated and effective than the crude instrument developed by Bell, and it is being used in ways he could not possibly have foreseen.

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