In the panic surrounding Sam/Kyle's kidnapping, Al says to "call 911!" Then he says, "No, they didn't have 911 in 1985! " This is not true. The 911 system was created in 1968 and, in California where this story is set, the emergency system covered the state completely by 1976.
Al refers to Kyle Hart as "Lyle Hart", even though in previous scenes his spoken name is Kyle, and a magazine cover is shown with "Kyle". Adding to the confusion, the end credits list the character as "Lyle Hart".
Immediately after Sam leaps in, he looks around and assumes he's a doctor based on the hospital filming set. The problem is that the cameras and crew are less than 10 feet away from the bed. He would have seen them when he grabbed the "patient's" chart at the foot of the bed.