All science is materialistic

[LinuxGal]

I think you've linked to the wrong article.

I have used the term materialistic to mean that, "the physical world is the only thing that exists and that nothing supernatural exists."  I have never used that word in any other context in this thread at least.  In this respect, Science and the scientific method is inherently materialistic, at least until clear and convincing evidence (say, the spontaneous healing of an adult amputee) would emerge to shatter that paradigm.

If a ghost can be detected, then it must interact with the natural world.  That makes it part of the natural world. If it cannot be detected, then it is indistinguishable from non-existent.  So either the supernatural does not exist, or it is indistinguishable from non-existent, which for all practical purposes is the same thing.