flow(s) -- culture(s) / of optimal experience

_ .. / / social / experiment(s) / create / art(s) / _ / .

twinkle(s) / difference(s)

game(s) provide a compelling analogy to culture(s)

both consist of more or less arbitrary goals and rules that allow people to become involved in a process and act with a minimum of doubt and distraction(s).

error(s) / play(s) / confession(s)

project(s) / pattern(s) / change(s) /... / cycle(s)