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Daniel C. Dennett

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The earth has grown a nervous system, and it's us.

 
Daniel C. Dennett

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In its evolution from a more primitive nervous system, the brain, as an organ with ten or more billion neurons and many more connections between them must have changed and grown as a result of many accidents.

 
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From its earliest days, science has been embedded in society, there has been a continuous learning process in society as a whole, based on day to day experiences and this can become the body of the knowledge from which applications and understanding have grown. ... Everything on earth has to function in harmony as a system, and it is only in such a system that humanity can flourish.

 
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Evolution embodies information in every part of every organism. ... This information doesn't have to be copied into the brain at all. It doesn't have to be "represented" in "data structures" in the nervous system. It can be exploited by the nervous system, however, which is designed to rely on, or exploit, the information in the hormonal systems just as it is designed to rely on, or exploit, the information embodied in your limbs and eyes. So there is wisdom, particularly about preferences, embodied in the rest of the body. By using the old bodily systems as a sort of sounding board, or reactive audience, or critic, the central nervous system can be guided - sometimes nudged, sometimes slammed - into wise policies. Put it to the vote of the body, in effect. ...

 
Daniel C. Dennett
 

Of all forms of symbolism, language is the most highly developed, most subtle, and most complicated. It has been pointed out that human beings, by agreement, can make anything stand for anything. Now, human beings have agreed, in the course of centuries of mutual dependency, to let the various noises that they can produce [...] stand for specified happenings in their nervous systems. We call that system of agreements language. For example, we who speak English have been so trained that, when our nervous systems register the presence of a certain kind of animal, we may make the following noise: "That's a cat." Anyone hearing us expects to find that, by looking in the same direction, he will experience a similar event in his nervous system -- one that will lead him to make an almost identical noise. Again, we have been so trained that when we are conscious of wanting food, we make the noise "I'm hungry." (p.26-27)

 
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"Perfect replication is the enemy of any robust system... Lacking a central nervous system—much less a brain—the parasite is a simple system designed to compromise a very specific target host. The more uniform the host, the more effective the infestation."

 
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