Aristotle compared the acquisition of knowledge to wax taking on the shape of a seal. I prefer to think of it (and must have gotten this from somewhere--don't know where) to a hand grasping something, with the interior of the hand taking on the shape of that which has been grasped (or perhaps I should say "the surface of the hand" in order to avoid the impression that I am imputing a kind of interiority--I am not sure that I want to go there). This metaphor captures how knowledge, and cognition in general, always involves active and passive aspects,with language being the way we reach out at things that we can't actually touch.
Integral to Dembski's idea of specified complexity (SC) is the notion that something extrinsic to evolution is the source of the specification in how it develops. He compares SC to the message sent by space aliens in the movie "Contact." In that movie, earthbound scientists determine that radio waves originating in from somewhere in our galaxy are actually a signal being sent by space aliens. The scientists determine that these waves are a signal is the fact that they indicate prime numbers in a way that a random occurrence would not. What is interesting to me is the fact that Dembski relies upon an analogy with a sign rather than a machine. Like a machine, signs are produced by an intelligent being for the sake of something beyond themselves. Machines, if you will, have a meaning. Signs, if you will, produce knowledge. But the meaning/knowledge is in both cases something other than the machine/sign itself. Both signs and machines are purposeful or teleological...
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