  Escalation is the fact that in a game (for instance in an auction), the
agents play forever. The $0,1$-game is an extremely simple infinite game with
intelligent agents in which escalation arises. It shows at the light of
research on cognitive psychology the difference between intelligence
(algorithmic mind) and rationality (algorithmic and reflective mind) in
decision processes. It also shows that depending on the point of view (inside
or outside) the rationality of the agent may change which is proposed to be
called the principle of relativity.
