50/50

Road signs, including One Way and Do Not Enter, have no text as they are Canadian road signs.

The film is set in Seattle, Washington, USA.

When Adam and Kyle destroy Rachael's painting it goes from being clearly torn apart by both an ax and knives in one shot to being whole again when they try to set it on fire.

When Adam is running in Seattle at the beginning of the film, the Lion's Gate Bridge in Vancouver, BC is seen in the background.

When Adam is in Dr.

Ross' office with his mother and father, his mother inspects a diploma from "Washington State University Medical School".

Washington State University does not have a medical school.

When Adam calls Katherine in the car, you first see his phone by his left ear.

Next shot it's by his right.

While set in Seattle the movie was filmed in Vancouver.

In one of the opening scenes when Adam and Kyle are walking down the street there is a sign in the background for Lotto 6/49 which is a Canadian lottery.

when Adam tells Kyle he has a tumor Kyle says "well are you going to be okay" and his mouth doesn't move then after that he says "what are your chances?" it almost overlaps.