In the first place, the use of a system of categories becomes here so obvious and unmistakable, that even if there were not several other proofs of it, this alone would sufficiently prove it indispensable in the system of pure reason.
Aurren-aurrena, hain argiro eta nahastuezinki erakusten da hemen kategorien sistema baten probetxua, ze, horretaz beste frogarik ez balego ere, aski izango bailitzateke bakar hauxe ere, arrazoi hutsaren sisteman, kategoria horien ezinbestekotasuna frogatzeko.