Yeshu

Pretend you are writing on a chalkboard in an otherwise perfectly quiet room with a blind person. For one hour, all you do is write out the alphabet and say the letter you write after you write it down. After that hour, you switch to picking random letters and test the knowledge of the blind person, seeing how many letters he can correctly identify just with sound alone. After a a while, that blind person would be able to identify words and then sentences.
All this displays is that there is quite a bit of data flowing from person to person in a spoken conversation that falls under the radar of typical communication. People can read lips, body language, and what is to day they can't read minute codes worked into speech. If words were little packets of data being shot back and forth, they would have a considerable amount of spare bandwidth available for really anything to be slipped in.
Basically I would tend to say that within certain bounds our subconsciousness share information without us consciously knowing it.

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