Only if that was a singular system, however, it is not. [0]
For example... The nerve cells in your gut may speak to the brain, and interact with it in complex ways we are only just beginning to understand, but they are separate systems that both have control over the nervous system, and other systems. [1]
General Intelligence, the psychological theory, and General Modelling, whilst sharing words, share little else.
Yes, and thanks to that human brains are generalist