The paper shows that in a Prisoner’s Dilemma Knightian uncertainty, formalised by multiple priors, may entail cooperation at a generalised Nash Equilibrium. The main idea is that players may have an attitude towards uncertainty that depends upon their available strategies. In particular, if...

Evaluation's way is set on a paradox. The feed-back of evaluation would imply - according to a wrong way - the evaluation of the examiner. Systemic Analysis could show the promises and the semantic limits of this technical. It seems to be impossible to measure work's human value through the...