All communication relies on one or more carriers. At the most basic level, when you’re speaking to a group of people in a room, the air is the carrier for the sound waves moving through it. You pass air through your vocal chords and shape your mouth in funny ways, and a bunch of compression waves emerge and fill the room with information that others then decode. No one can just grab the words out of the air to stop them from reaching someone else. The carrier is unenclosable.
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