Re: [Phys-l] Equations (causal relationship)

[Brian Whatcott <betwys1@sbcglobal.net>]

At 09:24 AM 5/1/2006, you wrote:
> Let me change something that I earlier presented BY BOLD ASSERTION to a
> question, even though I risk the wrath and the ridicule of the demi-god(s)
> of this list.
>
> IS PHYSICS ALGEBRA?
>
> Just because we write an algebraic equation to relate physical quantities,
> do ALL THE RULES of algebra necessarily apply to the physics.  Must nature
> obey our artificial mathematical rules?  Can't forces cause accelerations
> even in the equation we have used to MODEL this can be rewritten to
> _suggest_ that accelerations cause forces--or that nothing causes anything!
> Does physical causality have to follow our attempts to represent the physics
> with algebra?
>
> Rick
>
> *********************************************************
> Richard W. Tarara


Since Rick asks a direct question, In the spirit of helpfulness,
I will provide a direct answer.

Physics is not algebra.
Equations do not imply causality.
Causality is a slippery topic, not to be subsumed by
 three term algebraic equations.

There is great comfort in supposing some causal term and some
consequential term, in some familiar equation more  so than
in some other.  It appeals to one's reasoned prejudices.
But supposition does not invoke observational  evidence.

I am glad that my summary judgment resolves the concerns of the
august. It is just possible that it won't.   But that is not my concern,
I am happy to report.   :-)



Brian Whatcott    Altus OK    Eureka!