Science is a methodology.
And methodology is what now? (Note that definition you never responded to a week or so back)
"But within the scope of observable phenomena, science produces better and more reliable statements than any previous method."
And does non-observable phenomena exist?
Sorry if I don't respond to every post. What are you asking? Your question makes no sense.
And does non-observable phenomena exist?
How would we know?
I do believe that some phenomena are private -- our consciousness, for example. But invisibile is not the same an non-observable. Anything that has effects can be studied by its effects.