It all comes down to this with ID:
1) Science is ordered.
2) Chances of Chaos generating such a degree of Order is miniscule, at best.
3) Therefore, the chances of some sort of intelligence manipulated things into order is great.
Now, whether you call this intelligence God, Allah, or the Flying Spaghetti Monster like atheists call it (It was the hand of the Spectre that created it in the DC Comic Universe, for example). Or alien manipulation, like a few believe (Xenu). Or even a web that is anchored in time (Dr. Who). Or from beings that existed before the Universe was created in the Big Bang, things are too ordered and structured.
That's the actual theory.
By the way, I would suggest those trying to argue using Darwin may want to sit down and actually read 'Origin of Species' and some of his follow up writings.
"Science is ordered."
The physical world appears to be ordered because it is only those aspects of the physical universe that can be succinctly described (approximated) by concise mathematical equations that are or can be studied by human beings. The limitations of the human mind biases those aspects of physical reality that we study to those which possess nice simple structure. However, there is no rational reason that there aren't vast vistas of physical reality that contain no structure whatsoever (i.e. are incompresible.)
"...things are too ordered and structured"
What level of order and structure would you expect if there were no intelligent designer? Please quantify. Also, please define intelligent and a way to test for this attribute.
You sort of "forgot" to establish the validity of this unsupported premise of yours. Come back and try again when you can.
(Hint: Don't try to employ the *conclusion* you're trying to establish as one of your *premises*. That's that fallacy of circular reasoning.)