To posit intelligent design, you simply have to posit that the universe contains intelligence. You could use humans as the example, but something like dolphins would be more obvious - since the intelligence of humans is somewhat dubious.
After that, you state with supporting evidence that intelligence is an integral aspect of the universe and not an evolutionary end-product.
I'm not about to quote long and detailed articles here. You want "evidence" that ID has some intellectual and even scientific merit - go research it. It's clear that many have not done that. You put "Intelligent Design" into a search engine and read up on it. I'm not responsible for your self-education.
http://www.actionbioscience.org/evolution/nhmag.html
(if you don't like the source - it is reprinted from
Natural History magazine)
This link has some merit and certainly also has some educational value. I would have no problem at all in presenting materials such as this - or many of the other things you will find in your research of this topic - in the same lessons in which I would teach the theory of evolution.
What is becoming increasingly clear to me is the intolerance of those with views that differ from pure secularists by the secularists themselves. And I am tiring of the invective, derision, and bald disrespect that seems to be acceptable whan discussing any topic that may be related to those who have religious views.
As you know, I have no interest in religion myself, but the sort of derision and intolerance shown by its opponents is moving me toward a position in which I am ready to begin actively defending those with religious beliefs against those who seem to think it necessary to carry on a campaign of insult against them.