Now look at the way in which we use the word “trying”: a) A man is trying to open a door by pulling as hard as he can. b) He is trying to open the door of a safe by trying to find the combination. c) He is trying to find the combination by trying to remember it, or d) by turning the knobs and listening with a stethoscope. Consider the various processes we call “trying to remember”. Compare e) trying to move your finger against a resistance (e.g. when someone is holding it), and f) when you have intertwined the fingers of both hands in a particular way and feel “You don't know what to do in order to make a particular finger move”.