This is part 1 of an article exploring the nervous system, identity and motivation. I didn’t always believe in things I couldn’t measure. When my daughter was six weeks old, I took her to a cranial osteopath. She was colicky, inconsolable, arching her tiny back as if trying to escape her own skin. I remember sitting there, watching this stranger hover her hands near my baby’s head as though adjusting invisible threads. I thought it was utter voodoo nonsense. I wanted monito