People break down after a couple of hours. All the defenses go down and there's a kind of communication that if I spent 20 years in a living room with one of these people I would never never know as much about them as I do in that one day.
Like a morning dream life becomes more and more bright the longer we live and the reason of everything appears more clear. What has puzzled us before seems less mysterious and the crooked paths look straighter as we approach the end.