@Fil Albuquerque,
Fil. Albuquerque;142354 wrote:
1) Derive laws are great. They give us the prise of applies, but they are not the kind of things i concern myself with when thinking about the fundamental reality.
2) Just to give you a case. I am sure you know Neother theorm right? Well, a physics system has some quantities( ie: energy) conserved if the system is time symmetric. Suppose now, you have two worlds governed by different laws, and they do not share any differentiable space-time manifold. Could the two worlds be called a single physical system? If not, could there be a conserced quantities as energy by Neother ` s theorm? I think not. If there is not energy, then there is not lagrangian, or hamiltonian, so you would not be able to formulate a action principle for the world worlds. If not, then is there really a law? I think not.
Note:
I know things are getting technical, but this is not a simple subject matter. You have to know some physics, computer science, math, and specialize knowledge of philosophy. This is always a problem for me here. Once, again, i am sorry for making it too complicated.
---------- Post added 03-22-2010 at 05:54 PM ----------
Fil. Albuquerque;142363 wrote:I am one of them...nothing is invented if considered necessary...
Not exactly. A theory could be though of as a predictive device. It could simply be the way it is. A theory about monsters, and dragons might not be true, but dragons, and monsters seems to be necessary with respect to the theory.