I'm talking to you and it's basically a direct communication whereas if I'm writing a letter to you and you read the letter there are like 12 extra deconstruction and reconstruction steps in the communication.
During the past few decades modern technology with radio TV air travel and satellites has woven a network of communication which puts each part of the world in to almost instant contact with all the other parts.
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I understand why people went nuts for 'The Artist.' We use words so much it's nice to be able to explore a different way of communication to be able to express silently what someone – or something – is thinking or feeling.