Other: In the scene when Nash is put into the car and is being taken away to the hospital there is a line of people watching him drive away. Two of the spectators are the imaginary roommate and the little girl. They are standing in front of rest of the spectators. As the car is driving away you see a female student look around the imaginary roommate to see the moving car. If the roommate can only be seen by Nash why did she need to look around the roommate to watch the car drive away?

Factual error: In a scene that takes place in 1956 or 1957, Alicia Nash places an orange Tupperware container in the refrigerator. Although Tupperware first became very popular in the mid-50s, the particular model of Tupperware used in the film was not introduced until the late 60s or early 70s.

Factual error: In the end, when Nash gets standing ovations from the Nobel-prize audience, you can clearly see that the name Nobel is spelled wrong on the platform which he stands behind.

Continuity: When John's wife is in the bathroom she drinks all of the water in a cup, but when she throws it the cup is full again.

Factual error: The baby's pacifier that was used was not made at that time. It looked more like a NUK than the old rounded rubber tip.

Factual error: In the scene where he returns from the Pentagon to his place of employment, John Nash walks by an American flag. BUT: The flag has the staggered row arrangement of the current 50 stars, not the 48 star flag you should see in the 1950's.