When communication between the hemispheres is lost, each is unaware of the other’s knowledge and each functions independently based on the informatio… - Michael S. Gazzaniga

I once asked Leon Festinger, one of the smartest men in the world, whether or not he ever felt inept. He replied, “Of course! That is what keeps you ept.

Mother Nature has figured out a way to get rid of the extra neurons through a process called “pruning.” With appropriate input from the environment, the unnecessary neurons die off, and an acceptable number connect the two structures at the end of the developmental period. But, of course, here comes the fragility. Frequently the pruning is overdone. Indeed, evidence has accumulated that developmental mistakes in pruning lead to autism11 and schizophrenia.12 “Robust yet fragile” is everywhere, and the concept is central to realizing how the brain is organized.

The issue that captured the church was the issue of ensoulment and when it occurred during development. A church council decided to call it at conception, instead of the time frame St. Thomas Aquinas had argued in the thirteenth century, which was at around three months of gestation.