Well, thus using the typical past tense for a story flow is a sort of a movie in a cinema when a reader watch it as a third person, while the present tense is a sort of first person 3D shooter (PC game). There is even more coincidence with Kesey’s book since his character is pretending being dumb as well as in most PC shooters a protagonist does not say a word too. I do remember when I was younger and played 3D shooters I had a filling that the PC game’s character I was operating was dumb since he was able only to move and shoot as I liked but never recited a word of mine about those monsters to be shot. Though Kesey hardly had this resemblance in mind since there were no 3D shooters at his time yet.