A wellknown test in psychology involves a monkey who is supposed to find food in boxes of one particular colour amidst others of various colours: there comes a paradoxical period during which the number of 'errors' diminishes even though the monkey does not yet possess the 'knowledge' or 'truth' of a solution in each case: propitious moment in which the philosopher monkey opens up to truth, himself producing the true, but only to the extent that he begins to penetrate the coloured thickness of a problem.