Village Idiot (666) writes "In "Get Smart" secret agents wanting a private conversation would deploy the "cone of silence", a clear plastic contraption lowered over the agents' heads. It never worked — they couldn't hear each other, while eavesdroppers could pick up every word. Now a modern cone of silence that we are assured will work is being patented by engineers Joe Paradiso and Yasuhiro Ono of the Massachusetts Institute of Technology." Link to Original Source
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