One of the fascinating pieces of trivia below is true*, the other is false. Do YOU know which is which?

The Thing (1982)

1) In the DVD commentary, John Carpenter said Wilford Brimley was the only cast member not initially grossed out by the autopsy scene where they used real animal organs. Brimley had been a real-life cowboy, and gutting animals and removing organs was a normal experience for him. 

2) Wilford Brimley joined the production believing that he was cast as the titular Thing, and spent months in isolation at the Antarctic, studying the habits of predatory organisms, and subsisting on a diet so poor that he had no choice but to develop diabetes. When director John Carpenter informed Brimley halfway through filming that he was just playing one of the scientists, he flew into a rage and proceeded to tear the set apart with an axe and shoot at his cast members with a revolver that he always keeps tucked in his mustache. He was finally subdued by Kurt Russell, but not before Brimley had caused $3 million in set damage and killed four crewmembers. Carpenter was so delighted that cameras were rolling during the carnage that he included the scene in the final cut of the film. Brimley avoided prosecution for his crimes on the grounds that his blood was composed of 82% grain alcohol, rendering him legally not human. 

*true trivia courtesy of IMDB.com