mburns - 10 December 2007 11:54 PM
Derivatives have a geometric meaning.
They have a meaning, but that doesn’t necessarily translate to an independent existence. “Atom” has meaning, and represents something that exists independently in the physical sense, but the word only has that meaning because we agree on what that particular combination of symbols represents. If, at some long-ago time, somebody had decided that the smallest particle of matter that retains the properties of a pure element was called an “asdfghjkl”, then that combination of symbols would represent something other than the second line of keys on the keyboard. The particles themselves would still exist, but the word “atom” would probably have a different meaning, or none at all. “Derivatives” have a geometric meaning, but only because Newton and Liebniz invented a means of manipulating symbols that described processes that happen in the real world. Derivatives are conceptual descriptions, but in themselves, they don’t have an independent physical existence.
And, computers have no difficulty processing symbolic sequences and translating them into physical action; it is their essence to do so.
Only because we’ve designed them to do so. The symbols that the computer recognizes are, physically, nothing more than electrical potentials. We (well, somebody) have designed the computers so that patterns of those potentials have symbolism - to us. The computers couldn’t care less.
Humans are not an exception to this property of physics, and also are not exempt from would-be restrictions on symbolism. The range of expression of the concept of symbolism is not naturally restricted to the human brain. Only a cosmic censor could make that restriction, but that could not be from other considerations..
I’m sorry, I don’t follow this.
Geometry is not very symbolic, and so it has a convincing claim to exist “out there” rather than just in the human brain.
Geometry is entirely symbolic. All mathematics is. It’s a description of what we see in the natural world, but it’s not the thing in itself. I can draw two parallel lines with a piece of paper and a pencil, but there’s nothing inherent in those lines that says that they extend infinitely far and will never intersect (unless it’s non-Euclidian geometry). I can draw a circle, and find that the circumference divided by diameter is equal to 3.14159265..... but that particular number doesn’t actually have a physical existence. I only obtain it by manipulating symbols which represent a couple of physical qualities of a circle.
And on the other hand, it is Jausch who has academic priority on the notion that quantum states are a sort of categorical proposition. When geometry fails in its scope of expression, a more potent brew of symbolic mathematics takes over.
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Michael J. Burns
I’ll take your word for it about Jausch. But I stand by my assertion that mathematics is a symbolic representation of the physical world, and does not have an independent physical existence in itself. An electron exists, but we use the symbols and the conventions of quantum physics to describe it’s existence. That description may or may not be accurate, but it has no independent existence, and it is not the electron itself.
-Chuck