What the ID argument says is that you don't know.
We do know that homologs of flagellar proteins do you have selectable function which falsifies the claim that there are no selectable steps in the construction of the flagella.
So what is the ID step by step explanation for the construction of the flagella? If there is no detailed ID explanation then it had to evolve somehow, just by default, right? Isn't this exactly how the ID argument works?
You make up that there could have been other uses for all the thousands of parts that are involved in every one of the millions upon millions of systems and bodily functions on earth.
We don't have to make it up. It is a fact. Homologs of the flagellar proteins are found in the type III secretory system.
If your side was truly an honest scientific endeavor, it would INSIST that everyone of the weaknesses of your argument be taught in every school in the country.
Why schools where the audience is largely ignorant of the science behind it? Why not do some research and present it at scientific conferences or submit the research to peer reviewed journals? You know, do some actual science instead of making flawed arguments to school boards?