Everybody knows what the telephone is for. It rings. You pick it up. A voice travels down a wire and gets routed and switched right to your ear.
Everybody knows what to do with the television. You turn it on, choose a channel and let advertising, news and entertainment flow into your home.
Now imagine a medium that combines the switching and routing capabilities of phones with the video and information offerings of the most advanced cable systems and data banks. Instead of settling for whatever happens to be on at a particular time, you could select any item from an...
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