But the question is, what do we really mean by the term "intelligence"? What is already intelligence and what is not yet? Where is the border?
For instance, according to panpsychism, both intelligence and consciousness are gradual. For example, grains of sand patterned in the wind have a certain (relatively low) degree of consciousness. Plants are of a slightly higher degree, animals of even higher than plants, and humans - higher than animals, etc.
Indeed, and that is where the Intelligent Design crowd fails IMO - they go straight to "God diddit", usually reflecting the idea of some kind of oldschool Christian supernatural God, standing outside the universe. It often comes across as close to the old "God the watchmaker" idea where God creates "the machine" and then goes home.
I think we need to look at all these things and the implication of the failure of Darwinism and materialism in detail and with an open mind if we want to get anywhere, and not make the mistake of "swinging straight to the opposite".
My current (vague) thinking is that the organism must be an expression of mind, just as a man-made machine or computer is an expression of human minds (it performs certain functions for specific goals). So in a sense, human mind "transfers" goals into the machine. But where do our goals come from? Where do the goals of reproduction and survival come from even for the first cell? What can "transfer goals"? Or put differently, what is the source of goals? Perhaps we need to think about some of these things before we can even ask the question about mind or intelligence? (Mind you, I'm talking strictly on the functional level here, the crucial question of phenomenal experience doesn't even enter the picture yet.) I don't know, just what's on my mind right now.