It is a method whereby you try to disprove your ideas. The method is not set up to "prove" that something is absolutely "TRUE" in a philosophical sense. However, science is very useful for determing if our ideas of how reality works are wrong. Successful theories in science are ideas that people have tried to disprove over and over and have failed to do so.
Does science have a "boundary" beyond in which there contains facts inaccessible to it?
This is a non-sensical question in many ways. Science is not a method for acquiring facts. That would be Empiricism. Instead, science determines how facts are related to one another. Theories never become facts. Stephen J Gould stated this quite nicely:
Well, evolution is a theory. It is also a fact. And facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts. Facts do not go away when scientists debate rival theories to explain them. Einstein's theory of gravitation replaced Newton's, but apples did not suspend themselves in mid-air, pending the outcome. And humans evolved from apelike ancestors whether they did so by Darwin's proposed mechanism or by some other, yet to be discovered.--Stephen Jay Gould, "Evolution as Fact and Theory".
Ignoring his position on evolution for this thread, I think he states it quite clearly. Science produces theories, not facts. We discover facts (usually through empiricism), and then use science to determine how those facts relate to one another. In the words of Daniel Moynihan:
"Everyone is entitled to his own opinion, but not his own facts."
This is often the problem in these forums. People confuse opinions/beliefs with facts. Even if you really, really believe that something is true it doesn't magically become a fact. People even take it one step further and decide that this indicates these beliefs are "outside of science". The real situation is that these beliefs are IRRELEVANT to science. You can believe all sorts of crazy things, but it doesn't change the facts, nor does it change the status of a theory. These crazy ideas are irrelevant to the conclusions that science has reached.
For those that do, how to you justify it, and likewise, how do those that believe that there are facts beyond science justify it?[/quote]