The machinery that gives rise to the intelligence is inherent in the physics an intellegence exists in. That means, given some particular physics, the machinery that supports the functions of intelligence will arise by self assembly.
Also, an intellegnece that exists as a result of self assembly, ie. a human, could create machinery that supports intelligence that is different from that which arises as a self assembly from the physics itself. An example of that would be an artificial intelligence program running on electronic, or optical hardware.
intelligence...
That's like saying an automobile factory is inherent in the neighborhood where automobiles are found. And that the factory will self assemble.
But perhaps your example would be a better explanation.
How? What makes you so sure about this?
What scientific evidence do you have to support your conclusions?
You're stating this with a great deal of certainty. Presuming that you're human, just like the rest of us, where did you garner this information that seems to have escaped the rest of us?
If the machinery which gives rise to intelligence self-assembled, then the machinery becomes the creator and hence replaces God.
All you've done is replaced God in the universe with a machine as an explanation of how intelligence arose.