Corrected entry: Billy is found lying in a pool of blood. However, it's impossible that only seconds after he slit his throat the flow of blood has stopped completely. (01:56:10)
Corrected entry: In the scene where all the patients are tossing Mr. Harding's cigarette around, it lands in Mr. Taber's curled up pant leg and burns him. In the shot right before Mr. Taber screams, you can plainly see that the cigarette is smoking from the wrong end. The tobacco end is exposed and isn't even lit, but the smoke is rising up from the filtered end. (01:17:40)
Correction: Harding's cigarette was unfiltered as were most of the men's cigarettes in the movie. This can be easily identified during the blackjack scene when characters are holding up their cigarettes.
Corrected entry: When McMurphy makes the chief raise his hand to vote in favor of watching the world series and Miss Ratched declines it again, he starts shouting that the vote is now 10 to 9. It's actually 10 to 8, as he himself had said a little earlier. (00:45:20)
Correction: If Billy cut deep enough to sever both the jugular vein and the carotid artery, and his heart rate was very high (after his emotional outburst), he could have exsanguinated in the 1 and a half minutes required. He is still gushing when Nurse Pilbow screams, as evidenced by the blood spray on her, and the blood could have just stopped by the time we see him. Also notice the spray of blood on the walls, indicating he was losing blood hard and fast.