There is basis, and I just explained it with real world examples in the previous post. OK, smart things can themselves create smart things, so much is trivially true, but that observation cannot amount to an explanation of the fundamental nature of intelligence as that leads to an infinite regress. That intelligence arises naturally is the more profound truth of the matter. Complexity derives from simplicity, not the other way round. We find that large houses are made of small bricks; but we never find small bricks that are made of large houses as you would have us believe.
Infinite regress cannot be avoided, as I have explained many times. Even the Big Bang and the Singularity lead to questions about how they arose...and then further to how that something arose and so on. Science does not eliminate infinite regress. There is no 'Ultimate' answer.
So, let us stop complaining about infinite regress, please....and move further.
Since we can observe that human intelligence leads to evolutionary development in man made products leading to complexity and even intelligence, that is a perfectly valid reason to assume that biological evolution and complexity also have some kind of intelligent cause. That is the most logical assumption to make.
Ok...to begin with, you people may have problems with religious baggage because of which such thinking may seem ill advised.
Secondly, we may not be able to observe or understand the source of such Intelligence from our normal observations.
I agree these are problems, but these are issues we have to overcome rather than looking the other way and coming up with convoluted chance based explanations.