The topic of this paper is practical knowledge, which an agent has about their intentional action. There is a puzzle of practical knowledge, namely, we have two conflicting intuitions about practical knowledge. On the one hand, practical knowledge seems not to be evidenced by theoretical reasoning and observation. On the other hand, it seems to be so. To this puzzle, I complement and develop by reference to the modified version of the two visual systems hypothesis the perception solution, according to which practical knowledge is evidenced by not observation but rather perception.
