Techne, Habit, Experimental Reason

According to Aristotle, Techne is a Virtue, Virtue is a Habit, and habits are permanent acquisitions.  In contrast, following Hume's implication that a Habit is a past pattern that is only projected to continue in the future, Kant conceives Virtue to be not a permanent acquisition, but the indefinite product that is constantly subject to challenge.  Accordingly, Know-how, too, must be continuously updated if it is to be maintained.  But, then, for even the expert, every new exercise of skill is a test of what has been established, thereby revealing Techne as a mode of Experimental Reason.  Aristotle recognizes that the products of Techne, e. g. a work of Art, might not follow necessarily, but not that some skill itself, even Mathematical, is necessarily effected.