Prove it.
They exist within the supernatural or immaterial realm and are absolutely essential to the process of reason and the practice of science.
Keep your religious beliefs out of science class!
Isn't that the whole purpose of articles like this, and places like the Dyscovery Institute?
Without using some reliance on both reason and metaphysical presuppositions, nothing at all can be proved.
Science is only valid is so far as it makes sense. It is based on human reasoning. Thus all of which it determines is not based solely on evidence, but on human reasoning.
But let us suppose that Irish is not correct here, then why would we trust human reasoning at all? Are not all "thoughts" just something that appear to happen to the "brain" by mundane physical processes? Who are we to trust such a process? What in the world do such processes have to do with being "true" or being "false"? You see, without some presuppositions, there is no logical reason to proceed further and justify any form of human reasoning, including that which justifies science.
Sorry GunRunner, but the standard of evidence you demand of Irish, can not be met by any belief system of man--at least without divine interference.
Keep your religious beliefs out of science class!
If unprovable reasoning about metaphysics is what constitutes "religion" in this sense, we must then teach nothing in science class at all. For myself, I would prefer to see the government out of the school business and let the demand drive the nature of the product. Until then, seems an examination of the philosophy and justification of science and a consideration of its limitations is quite a reasonable part of science curriculum.