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The theory of communication is partly concerned with the measurement of information content of signals, as their essential property in the establishment of communication links. But the information content of signals is not to be regarded as a commodity; it is more a property or potential of the signals, and as a concept it is closely related to the idea of selection, or discrimination. This mathematical theory first arose in telegraphy and telephony, being developed for the purpose of measuring the information content of telecommunication signals. It concerned only the signals themselves as transmitted along wires, or broadcast through the aether, and is quite abstracted from all questions of "meaning." Nor does it concern the importance, the value, or truth to any particular person. As a theory, it lies at the syntactic level of sign theory and is abstracted from the semantic and pragmatic levels. We shall argue ... that, though the theory does not directly involve biological elements, it is nevertheless quite basic to the study of human communication -- basic but insufficient.

 

Colin Cherry

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"Information" in most, if not all, of its connotations seems to rest upon the notion of selective power. The Shannon theory regards the information source, in emitting the signals (signs), as exerting a selective power upon the ensemble of messages. In the Carnap-Bar-Hillel semantic theory, the information content of statements relates to the selective power they exert upon ensembles of states. Again, at its pragmatic level, in true communicative situations [...] a source of information has a certain value to a recipient, where "value" may be regarded as a "selective power." Gabor, for example, observes that what people value in a source of information (i.e., what they are prepared to pay for) depends upon its exclusiveness and prediction power; he cites instances of a newspaper editor hoping for a "scoop" and a racegoer receiving information from a tipster. "Exclusiveness" here implies the selecting of that one particular recipient out of the population, while the "prediction" value of information rests upon the power it gives to the recipient to select his future action, out of the whole range of prior uncertainty as to what action to take. Again, signs have the power to select responses in people, such responses depending upon a totality of conditions. Human communication channels consist of individuals in conversation, or in various forms of social intercourse. Each individual and each conversation is unique; different people react to signs in different ways, depending each upon their own past experiences and upon the environment at the time. It is such variations, such differences, which gives rise to the principal problems in the study of human communication. (p. 244-5)

 

Colin Cherry

 

They have had numerous extraterrestrial signals. They were apparently searching in a spectrum or in an area . . . where they hit the mother lode. The signals were so numerous that they began to have their systems externally jammed by some sort of human agency that did not want them to continue receiving those signals... [I received this information from a source in SETI.] This person, if I were to say who he is, almost every one your listeners would probably know the name. (July 30, 2006)

 

Steven M. Greer

 

Without an understanding of causality there can be no theory of communication. What passes as information theory today is not communication at all, but merely transportation.

 

Marshall McLuhan

 

Physically, we transmit signals or signs -- audible, visual, tactual. But the mere transmission and reception of a physical signal does not constitute communication. A sign, if it is perceived by the recipient, has the potential for selecting responses in him. Physically, when we communicate, we make noises with our mouths, or gesticulate, or exhibit some token or icon, and these physical signals set up a response behavior.

 

Colin Cherry

 

“Now, consciousness. That’s a fun thing, isn’t it? Product of an arms race between predators and prey. If you watch a cat creeping up on a mouse, you’ll be able to impute to the cat intentions that are most easily explained by the cat having a theory of mind concerning the mouse—an internal simulation of the mouse’s likely behavior when it notices the predator. Which way to run, for example. And the cat will use its theory of mind to optimize its attack strategy. Meanwhile, prey species that are complex enough to have a theory of mind are at a defensive advantage if they can anticipate a predator’s actions. Eventually this very mammalian arms race gave us a species of social ape that used its theory of mind to facilitate signaling—so the tribe could work collectively—and then reflexively, to simulate the individual’s own inner states. Put the two things together, signaling and introspective simulation, and you’ve got human-level consciousness, with language thrown in as a bonus—signaling that transmits information about internal states, not just crude signals such as ‘predator here’ or ‘food there.’”

 

Charles Stross