Friday, September 2, 2016

The stock and flow of IQ

A recent publication in the Royal Society Open Science (1), hypothesizes an intriguing idea - explosion in hominoid intelligence a few million years ago was aided by a significant increase in blood flow to the brain and not necessarily by an increase in its size. Moreover, the increase in the flow of blood may have resulted in the growth in brain size. If so, a lucky change in the diameter of the arteries carrying blood to the brain may be responsible for humans dominating the blue planet.

Plumbing appears to be central to health. It has been speculated that most autoimmune diseases, including even Alzheimer's disease, could be related to the body's declining ability to eliminate waste through the plumbing system, it has been afforded. Age and use of these systems appear negatively correlated with their efficiency in clearance. If the recent finding is true, the plumbing alone plays a central role in the evolution of intelligence, providing the energy hungry organ with ample fuel and cooling and nourishing it from relatively modest beginnings in Australopithecus to arguably better modern humans.

Plumbing appears to be central to modern medicine. In a regime with little threat from microorganisms, humans may perish by the clogging of their own aging infrastructure.