*In interest of providing a briefer understanding of my points,
I have bolded the key points. If desiring further understanding of those points feel free to debate/discuss them, but perhaps check within context of what is said in relation to that bolded point.
Yeah, give the definition then give evidence.
You are claiming that this is the core foundation of science, you obviously came to that conclusion somehow.
The definition of science, based on link you provided says:
the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment
I would assume it to be after logical deduction and evidence, thus I would like to see the evidence as I've already seen your deduction.
The evidence, I provide here, would be an argument to which the points that I raise you either accept, discuss / clarify, disagree with, and/or debate.
The definition is stating science is the study of 'something' and that is the 'physical and natural world.' Let's say it said the study of 'God and the metaphysical.' Would it then be fair to claim that this type of study rests on faith, UNLESS that object of study could be shown to exist outside of the data (and really evidence) that is using references to that area of study.
Like saying God exists, because the Bible (which can be seen by everyone) asserts, or strongly implies, that God both exists and is real. Is it only one bible, one source stating this? No, it is many. Therefore, we could say that is 'objective evidence.' Me, I wouldn't. I would say outside of all those sources, not taking those into account,
it would be objective evidence if it could be shown and/or explained that this area of study doesn't (at least appear to) rest on faith, if this
God could be found outside of these (biased) sources.
Likewise, the physical and natural world is perceived/observed by physical senses. Then understood, described, analyzed, etc. via the mind (or brain, which is also relative to the physical). I find
science, based on its definition and scientific method to be based on circular reasoning, that relies on faith at its core: that the physical world exists and can be observed/known through physical perception.
This point is at the heart of this thread, but
this thread is also stating that if religious claims ought to answer to scientific rebuttals and inquiries cause it dares to include data that science has systematically studied and made findings of,
then science ought to address inquiries of other endeavors when it makes its claims which those endeavors are also studying. It must also be perfectly willing to accept the other endeavors methods for determining veracity. Otherwise, one could just say 'irrelevant' and move on, aka ignore the co-mingling. Thus scientific claims may have nothing to do with religious findings and religious claims may have nothing to do with scientific findings. Then again, they might. Really seems to be up to the individuals and does seem quite well known that these two endeavors (and others) co-mingle and that proponents of science make it an ongoing point to have other endeavors' claims, answer to its inquiries and checked against its methodology. Ya know, being the best method ever.
Philosophy deals with claims that state the universe may be non-physical, it is not within the realm of science.
Philosophy does not only make this claim. It encompasses inquiries and understandings (many of which are logically consistent) into the nature of the non-physical and physical. There are branches of philosophy, well known, that encapsulate such claims.
Every scientist in the world can believe that this universe is only physical, it won't change the area that the claim belongs to.
Not sure how this follows. But if you wish to base your entire rebuttal around this assertion, I'm all ears.
Science is knowledge, our knowledge says that with the evidence we have at our disposal, and are continuing to find, the universe is only physical.
Knowledge of the physical relies on faith that the physical exists. How does this evidence come to us?
Via observation, hypothesis, prediction, testing, analysis and sharing of findings / conclusions (leading to consensus and/or further testing and additional / updated findings) - aka the scientific method. It (necessarily) begins with observation.
This observation is non-objective in that it relies on physical perception of the physical (and natural) world.
It is inherently biased in this fashion.
It relies on faith that perception exists objectively, and not a collection of subjective viewpoints. Once that is understood, the rest of the scientific method works swimmingly. Not perfectly, but well enough.
Science is not the first endeavor in human history to engage in hypothesis and/or analysis. Surely not the first to engage in sharing of findings. Not that this matters much to the point I'm making, but does matter to any side points of suggesting science is unique in its endeavor and method of studying the nature of the world.
Because
science is essentially self limiting natural world to the physical (phenomenon), it's first step (and really all subsequent steps that deal with that data set) is assuming the perception of the physical world exists. It has high degree of confidence in the existence of this world. It is not the only human endeavor that does. All human endeavors that do, and are
using physical senses to establish said existence are relying on faith / high degree of confidence that is non-objective.
To date,
I have not seen either via argument or evidence, existence of the physical world that does not rely on asking an individual to utilize physical senses to establish existence of the physical world.
Have I 'seen' evidence of another form of existence / reality and/or could that be shown / understood? Perhaps. It might rest on faith, or assumption that such a world / thing exists. A world that may be described as non-physical or perhaps would be better described via alternative understandings, all of which could be hypothesized about, tested by various individuals, subject to predictions and analysis and findings that could be shared. Might not be perfectly established existence that is without any flaws in understanding its basic existence, as is the case with the physical world, which also has shown reliability on observation alone or even relying on one's practice of going through the scientific method (via physical observations) do not lead to firm, objective conclusions that the physical world exists. It just continues the on-going assumption that study is plausible, ongoing and proudly open to updates and sharing of more findings.