To expand on this, healthy human brains seem to be made of many interacting systems which function in different ways. It may be that in the future we view the s

To expand on this, healthy human brains seem to be made of many interacting systems which function in different ways. It may be that in the future we view the search for one simple formula for "intelligence" / "understanding" / "consciousness" (pick your poorly-defined poison) the same way biologists view the concept of elan vital.