On 04 Jan 2015, at 05:33, John Clark wrote:
On Sat, Jan 3, 2015 at 9:55 AM, Bruno Marchal <[email protected]>
wrote:
> Are only 0, s(0), s(s(0)), ... primary? or should we also insist
that addition and multiplication are primary.
You tell me, you're the one who asked "Do you believe in a PRIMARY
physical universe?; I can't answer your question if even you don't
know what the question is.
> That needs to be clarified
Then do so, and do it before you ask me again if I believe in a
primary physical universe.
By your post, it seems you do not believe in a primary biological
reality or even a chemical universe. It seems that you believe that
chemistry can be reduced conceptually to physics.
This means that we don't need to assume some vital or chemical
principles. Physical entities and physical laws can explain the
chemical laws, which can explain the biological laws.
Here the physical entities and laws are primary and the chemical and
biological are not.
My question can be put in this way: do you think we necessarily need
to assume physical entities, or are you open to the idea that the
physical itself can be reduced to another field (like perhaps number
theory, or mathematics, or some abstract psychology, or theology, of
computer science, etc.)?
> Personnally I don't see how a complex numbers, or an integer can
be considered physical at all. By physical universe, I mean what is
described in the book of physics.
Both integers and complex numbers are described in physics books,
you can't do physics without them.
The fact that a book in physics use mathematical notions does not
imply that the mathematical notions are physical.
Book on gastronomy use english does not make the use of english an
object of gastronomy.
Bruno
John K Clark
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