==What is the single most powerful argument you have for ID?
My single most powerful argument for ID is that there is intelligence and design in the universe.
BTW, ID does not attempt to explain who the designer is, they only seek to use the scientific method to detect design in nature. In that sense, their program is rather modest, in that they leave the identification of the designer for other disciplines (which, given our current understanding, is where you leave the realm of science and enter the field of metaphysical cosmology, religion, etc).
There is no obvious cause and effect relationship. What you are really saying is that you don't know of a scientific explanation for either our intelligence or perceived design in nature, so you are reaching way out and pulling down a supernatural explanation. Does the designer custom make each snowflake? Or is that a natural phenomenon?
BTW, ID does not attempt to explain who the designer is, they only seek to use the scientific method to detect design in nature. In that sense, their program is rather modest, in that they leave the identification of the designer for other disciplines (which, given our current understanding, is where you leave the realm of science and enter the field of metaphysical cosmology, religion, etc).
I don't believe this for a moment. The entire focus of the ID movement is pushing a Christian Deity. Read any of the major ID documents, or follow the threads here on FR. It won't be long before you see Biblical quotations or other scripture/revelation brought into the argument. It generally takes the form, "I don't know how it occurred, so God did it! Whoops, strike that--the designer did it. I'll get back to you with the details."
I have asked on numerous occasions how many IDers there are, and I have asked for some justification for whatever answer may be provided. I have never received an answer to my question. I believe that is because to IDers the answer is clear--the Christian God is the creator, and the justification is the Bible. But--its against the guild rules to admit that, so I receive no answer at all, or only a vague, "We'll get back to you on that." Your answer, "they leave the identification of the designer for other disciplines" is typical.