Revealing mistake: When Swayze gets into a fight in the bar office with an employee who was recently fired, he ends up going through a window with another thug during the fight. Watch carefully as they go through the window. The falling man has a hair style significantly different from Swayze; it's his stunt double. It's more obvious as he hits the table in the continued shot. (00:38:25)
Revealing mistake: Right before Bigfoot drives through the dealership, you can see that the doors and windows of the dealership are on temporary stands and not attached to the concrete. (01:25:15)
Revealing mistake: Double Deuce is in Jasper, MO, but this was filmed in California. After Dalton tells Tilghman that Brad Wesley was not afraid, it cuts to Dalton driving. In the background, at the left there's a sign for "Magic Mountain Pkwy" and at the right the California State Route 126 sign that reads "126 West, Ventura." After the Ford dealership is destroyed, another sign in the background reads "Los Angeles, Bakersfield" (the I-5 North to Bakersfield and I-5 South to Los Angeles). (01:25:55)
Revealing mistake: In the first fight in the entire movie, the first guy Dalton punches is bleeding from the nose before Dalton actually makes contact.
Chosen answer: Legends of the Fall by Jim Harrison.