First off, something which can be either true or false is factual, not scientific.
Science discovers the 'facts' of the physical universe. Although we assume 'facts' are 'true', 'facts' can change according to knowledge. 50,000 years from now, scientists may have radically different veiws of the 'facts' of many different things, according to how much knowledge they have.
Truth, on the other hand does not change. Also, the two can be confused.
So, science attempts the 'facts', and some of those 'facts' may be true, or not true. Science's understanding is based on it's knowledge. Truth is just that, regardless of knowledge. So it is for me and ID, I see it in some form as true, although I do not possess the facts that can qualify it as "science".
Science attempts to find out what is true and how and why it is true.
Science finds the "how". "Why" to a certain extent, I can agree, but I find some levels of "why" as beyond science, simply because science cannot 'work' on somethings.
Second, what I think you might be trying to say is that there are existing phenomena which are true and are unexplainable by science.
Right. Science only deals with the natural. It can't deal solely with the supernatural. So, say the phenomenon is completely supernatural, science cannot, nor ever will explain said phenomenon.
This in itself is an impossible position to defend as there is no way of saying that science will not progress to the point of explaining somethings previously thought unexplainable.
Oh, science has before, and will again, I am sure explain somethings thought unexplainable before. I am just saying there are somethings that it cannot.
Third, if it's trying to pass itself off as a science, which ID is attempting to do, and it cannot fulfill the definition of a science, which ID does not, then it can be rejected on the grounds of being unscientific.
Then if it is not working, ID proponents need to focus on the fact that ID is either truthful or plausible as something true,
nothing specific, mind you.
Then, say there is a science class deals with 'Earth's origins', then ID can be taught as a plausible idea, that people should be given the option to consider.
Wow, your analogy makes my brain hurt. ID cannot be taught in science classrooms, cannot be presented as science, because (and do please pay attention to the reason hereit is not a science.
As I said (above), ID could be given as an idea to consider based on it's plausibility and relevancy.
Furthermore your analogy doesn't follow logically. Even under your logic the science teacher would be saying "Favorite colors exist but I can never know your favorite color."
Yeah, it was just off the top of my head....