"The human brain responds positively to physical contact actually, well, most of the time. We're not meant to be completely alone, to not have another close to comfort and support us. Platonic or familial or romantic or friendly, we need other people."

David answered with a shrug. "It's... I don't know. It can just be comforting, to even be touched for a second when the world seems hard and cold and peace is out of our reach."