We are woefully ignorant about how genes build brains, and how the electrical activity of the brain builds thoughts and emotions.

To make a movement, the brain takes the electrical activity of many neurons and combines them to make muscle contractions. But the movements aren't always perfect. So we asked, what gets in the way?

There is hope, even when your brain tells you there isn't.

Abnormalities in brain function have traditionally been detected using electroencephalography (EEG), which involves the measurement of the ongoing electrical activity generated by the brain.

The brain is heavily influenced by genes. But from birth through young adulthood, the part of the human brain that most defines us (frontal cortex) is less a product of the genes with which you started life than of what life has thrown at you. Because it is the least constrained by genes and most sculpted by experience. This must be so, to be the supremely complex social species that we are. Ironically, it seems that the genetic program of human brain development has evolved to, as much as possible, free the frontal cortext from genes.

What made marriage so difficult back then was yet again that instigator of so many other sorts of heartbreak: the oversize brain.