[krapp]

>Now, regarding physical models, you are assuming there is a universal truth or reality that is the same for everyone. And that is just a belief.

There appear to be universal constants which can be experimentally verified and whose attributes and behaviors remain consistent. In other words, the universe appears to have properties which can be known. There is no evidence that the fundamental nature or properties of reality change based on the beliefs of the individual observer. Therefore, it is reasonable to assume that universal physical reality does exist, and that data gathered through repeated observation and measurement more accurately describes that reality than speculation without such evidence.

>I don't think you can force anyone to believe something.

Wasn't trying to. Just pointing out that the universe isn't arbitrary, and not all conjectures are equally valid. You can believe the moon is made of green cheese if you like, just don't expect to be taken seriously, because there is a vast amount of evidence that it isn't.