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Stefan Weckbach,
Any explanation of the physical world starts from some arbitrary assumptions. If everything can be explained based on those, then the assumption is justified. If matter emerged from a 'deeper reality', then the deeper reality is arbitrary. This arbitrariness regarding the basic can never be removed. We can only reduce the arbitrariness to the minimum.
The so-called "best theories" do not even provide an overall picture of the physical world. Each of the best theories is at loggerheads with the rest, and explains only some part. It is far from an ideal model. The model I propose gives an overall picture from particles to the cosmos. It starts from assuming that fundamental particle of matter have some finite properties. The step by step integration of such particles into a system we call the universe is explained based on mathematically viable models. So the initial assumption is justified.
'Mathematical laws' and 'properties of matter' are unchangeable. Even an omnipotent creator has to obey mathematical laws if he is to create a programmed universe. Otherwise he will have to interfere every now and then if it is to work. However he can create something other than matter, having some other properties (let us not worry about that). Here the programming requires just one step: select the fundamental particle having the given mass, volume, energy and force; leave a very large quantity of such particles in the three-dimensional space. The rest follows, mathematical laws deciding the integration in each step. However, once a universe is formed, it cannot revert back into particles, and it remains programmed. Based on observations and rational thinking, we can never know whether it started out as particles, or as a programmed whole.
If we say that a creator did all that, then logic requires that we have to answer the question, 'Who created the creator?', and this will turn into an infinite loop. So we have two arbitrary options from which we can select: (i). A creator who exists forever created this cosmos (ii). The Cosmos exists forever (like a creator). Any answer is 'arbitrary' because we can never prove it.
The goal of physics is limited to explaining 'how the cosmos works' and not 'why the Cosmos exists'. So we have to be satisfied with 'brute' matter and 'brute' mathematics. I started with matter and completed the explanation. If somebody starts with something different, he has to show that he can complete the explanation.
Jose P Koshy