Silent communication

What thing can not be made possible by technology?! The hall where the Forum is held is now quiet. How come? Well, the audience is sitting around tables and have got a little electronic device. It look like a remote to the tv but with phones. It works (when I figured it out) more or less as a radio.

In that way many speakers can speak and be listened to at the same time. At this moment there are speakers in every corner of the room, and I can just choose who I want to listen to. And all they have to do is speak with normal tone into a microphone, and then everyone in the audience that have chosen that speaker can hear it perfectly. Fascinating!

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