What do I call the “rules || rule according to which he proceeds”? the || The hypothesis which describes satisfactorily his use of the words as we observe it, or the rules || rule which he looks up as he is || in using the signs, or the rule which he gives as an answer when we ask him what his rules are || rule is? But what if our observation does not || doesn't show us clearly any rules || rule, and the question doesn't bring any to light || elicit one? – For although he did give me an explanation when I asked what he understood by “N”, he || he gave me an explanation in answer to my question, what he meant by “N”, but he was prepared to retract || withdraw this explanation and alter it. How then || So how shall I determine what the rules are || the rule according to which he plays? he || He doesn't know them himself. – Or more correctly: What || what is the expression, “rule according to which he plays”, supposed to mean here || use is there in this case for || left for the expression “rule according to which he plays”?