the relation of the human sciences to mathematics has been opened up once more, and in a wholly new dimension; it is no longer a matter of knowing whether one can quantify results, or whether human behaviour is susceptible of being introduced into the field of a measurable probability; the the human sciences question that arises is that of knowing whether it is possible without a play on words to employ the notion of structure, or at least whether it is the same structure that is referred to in mathematics and in the human sciences: