If someone still wanted to propose a middle way between the only two, already named ways, namely, that the categories were neither self thought a priori first principlesa of our cognition nor drawn from ex perience, but were rather subjective predispositions for thinking, implanted in us along with our existence by our author in such a way that their use would agree exactly with the laws of nature along which experience runs (a kind of prefonnation syst of pure reason), then (besides the fact that on such a hypothesis no end can be seen to how far one might drive the presupposition of predetermined predis positions for future judgments) this would be decisive against the supposed middle way: that in such a case the categories would lack the necessity that is essential to their concept For,.g.