What do you mean, ok?
It is!
Given: Intelligence exists
We observe: intelligent entities can alter [stuff]
Given: everything has a cause
Given: everything observable is either intelligent or not
We conclude: everything that happen(s) is caused naturally or by deliberate action on the part of intelligence
The above is especially true on earth and absolutely applies; if you come across a factory in the forest, you understand 1) the factory exists and 2) something "caused" the factory; you might conclude that intelligent entities are behind the factory, or that it simply arised naturally, although the former makes more sense to me.
Given: the universe had a beginning
Given: the above
As we don't know what caused the universe, we conclude, based on observation, that the universe either formed without intelligent cause, or because of/with it (one's justification for this could be to point to the "fine-tuning" of the universe, or the sheer complexity of it); ironically enough, intelligence causes complexity, yet it is caused by simpler processes and mechanisms