Critical Theory of Life and Literature

You pull the trigger of your pistol, aimed at the man in the yellow hat. You hear a sound, and feel the jerk of the backfire. However, as a critical theorist, how do you know the gun went off? If everything is ambiguous and arbitrary, how on earth are you certain anything happened? Sure, the pistol is one bullet short. Yes, the man is on the ground writhing and screaming in pain. Your friend says, "Nice shot." How does she know the gun went off? All evidence suggests something happened but read Kalages, Lacan, Deridah...the pistol was an arbitrary symbol of Aristotle's second world of perfection. Nothing happened. Twenty to life because of nothing. (MY CONFUSION EXACTLY!!!)