@kennethamy,
godels theorems are very interesting and profound for sure. Key to his results are the concept of axioms. We start with axioms and build up from there with mathematical systems which we use as models in science. We use different axioms for different mathematical systems, for use in different models. eg real and complex algebra. The axioms cannot be proved within a sufficiently complex system. They can be proved if we extend the system with new axioms, but in doing so we have created an even more complex system, and within that the new axioms cannot be proved.
What we are left with is a choice as to what axioms and mathematical system we use to describe the world.
Suppose then we imagine that we choose an axiomatic mathematical system that describes the behaviour of the physical world. (ie time space energy momentum the lot.) We would still be left with unknowns due to experimental difficulty in confirming the results, but suppose we find no example of the physical world that contradicts the model. Have we found the holy grail of science with a complete theory of matter?
What does it mean that a physical being exists in such a universe that knows that the axioms cannot be proven within that mathematical system, and moreover such a being is able to concieve and mathematically express systems (in writing for example) that are more complex than that scientific mathematical model previously considered complete?
Would the existence and ability of such a being necessarily lead to physical behaviour (in their brain) that is outside the scientific model that was previously considered complete? Because if so then we can always choose to think in a way that creates physical behaviour of matter
outside any scientific model we have developed.
But what do we mean by outside the theories of science? The thing to remember is the distinction between a consistent theory and a complete one. It may be concievably possible to develope a mathematical model of the physical world that is never contradicted by scientific experiment....... but that does not make it necessarily complete.
eg a model of football.
The game requires a ball, playing surface, two teams, officials and a set of rules that the officials are responsible to enforce. Officials make mistakes.
There may never be a game that contradicts this description but it is far from complete. Similarly science may develope a theory of matter that is consistent with experiment, but is nevertheless incomplete. There may be all kinds of nuances that are occuring outside the model, but never contradict it.
It may be the case that an experimentally consistent theory of matter based upon a sophisticated mathematical system is found, that nevertheless does not discover any behaviour in the brain that contradicts the theory...... despite the fact that the person being observed experimentally is doing maths that is more complex than the scientific theory and is in that sense
outside it.