Não sei porquê, mas nestes dias (e a seguir ao último post) veio-me à memória a velhinha questão colocada por Watzlawick a propósito da solução do problema da união de nove pontos com quatro linhas apenas e sem levantar o lápis do papel, e que ele usou para ilustrar o reframing:
«Almost everybody who first tries to solve this problem introduces as part of his problem-solving an assumption which makes the solution impossible. The assumption is that the dots compose a square and that the solution must be found within that square, a self-imposed condition which the instructions do not contain. His failure, therefore, does not lie in the impossibility of the task, but in his attempted solution. Having now created the problem, it does not matter in the least which combination of four lines he now tries, and in what order, he always finishes with at least one unconnected dot. This means that he can run through the totality of the first-order change possibilities existing within the square but will never solve the task. The solution is a second-order change which consists in leaving the field . . . » (Watzlawick et al 1974: 25)
PS: a solução - que implica sair do campo - está aqui.