Sometime in the 330s BC, in a grove outside Athens, Aristotle set out to count the ways a mind arrives at truth. He found five. Some knowledge is of what cannot be otherwise: the demonstrable, the general, the true whether or not anyone is watching. He called it episteme. Some belongs to the potter and the shipwright, and its proof is simply that the pot holds water and the ship comes home. That is techne.
The third he warned was the hard one. Phronesis is knowing what this situation, this person, this particular afternoon actually calls for. It cannot be handed over as a rule, because rules are general and situations never are. The young can be brilliant geometers, Aristotle observed, and are almost never wise, because wisdom is made of particulars, and particulars take a life to gather.
Beneath all of it he placed nous, the grasp of the first principles that nothing can prove for you, because a proof has to start somewhere. Above it he placed sophia, the highest, which he defined as nous and episteme held together: not merely knowing what is true, but knowing what is worth knowing.
Technology has inherited all five and kept them in separate rooms. It has built beautiful things that knew nothing. It has encoded what was generally true into systems nobody could stand to use. It has learned, lately, to attend to the particular person, and spent that gift on choosing which advertisement to show them. None of the five has ever been scarce. Their convergence has.
Our mark has six faces, and they do not close. The gaps between them are the point. Five of the faces carry these virtues. The sixth is aporia: a-poros, without passage, the impasse. The recognition that you cannot yet get through.
Aristotle never counted it among the states by which the soul arrives at truth, because it is not one of them. It is the condition of all of them. Metaphysics Book Beta is little more than a catalog of aporiai, and he says there that whoever inquires without first laying out the puzzles is like a man who does not know where he ought to be going. The five are what comes out. Aporia is where you have to be standing first.
Techne, episteme, phronesis, nous, sophia. Five ways of knowing, and the gap they all set out from. We are here to hold all six.