Your brain is just a soup bowl of machines. For clarity, we will distinguish machines of the brains by calling them "prochines" (a portmanteau of proteins and machines). The way prochines interact is studied in the field of cogniphysics.
We can describe the machines, write out their source codes precisely, and predict how they interact. The defining movement of the 21st century will be the understanding, discovery, explicit codification, and creation of myriad machines and prochines.
This proces has been fomenting subliminally since the beginning of time. Your body, your tools, morality, the Internet, philosophical ideas, and emotions are all examples of machines. Your dreams and ideas are reality.
A few immediate and many more distant conclusions spring immediately from this theoretical foundation. In particular, IQ tests lack theoretical grounding and The Bell Curve book is fundamentally wrong and misguided.