I thoroughly enjoy watching educational TV as the show producers take a run at explaining existence as well as they can. As far as I know, each of these shows says to me that the Universe has boundaries. If so there is a "this side" of the boundary and a "that side." I wish one of these scientists could explain to me what is on "that side."
They tell me the Universe was once a miniscule, tiny, microscopic, pre-elemental pin prick if pure energy. It seems to me that energy can be measured. I wonder where this measurable thing was. What, exactly, was it in?
They tell me that Einstein was so uncomfortable with the idea of an expanding universe that he interjected a mathematical constant in his calculations to eliminate the thought. He came eventually to think that was a mistake in his life. Yet, I suspect he did what he did because the questions raised by an expanding universe were terrifying to a scientist.
I can't understand why the theory of ID is so horrible to scientists who talk matter-of-factly about a bounded universe. Maybe infinity is just too rough a subject for mere humans.
A theory? ID might be called a hypothesis but certainly not a theory. A theory is well-established, having survived repeated testing via the scientific method.
The reason so many take umbrage to ID is that its proponents put forth no testable hypotheses, yet offer all sorts of conclusions.
I have no objection to teaching ID in philosophy class, but to date it has yet to rise to the level of science. (BTW, it is fine with me to discuss why it does not meet the standards of the scientific method in biology class.)