Best thriller movie mistakes of 1973
Continuity mistake: At the beginning, just after the title credit the President's car is machine gunned and you see the back windshield shatter and disintegrate. Moments later the car arrives at the airport with the windshield intact. We see de Gaulle get out of the car with the intact rear windscreen.
Factual error: On the night of 19 October 1933 the railroad workers begin betting whether A-One will make it to Portland on the 19. A quick closeup of the money changing hands reveals the $1's to have the Great Seal reverse (introduced in 1935) plus the motto IN GOD WE TRUST (introduced in 1957). Also, the green-seal Federal Reserve Notes and the red-seal United States $2 notes are of the types first introduced in 1934.
Continuity mistake: In the scene where Eastwood is watching "the city of Lago volunteers" training,he is drinking a beer. The first time he lifts the glass to drink, it is about half empty. After he says something to the man with the knife, he lifts the glass for another drink and it is nearly full.
Continuity mistake: Shortly before Sol's death, Thorn rushes into the suicide center and talks to him from the control room above. When Sol pleads Thorn to listen, there's interference on the intercom. Now watch the control panel: The earphone cable on the left side dangles back and forth each time the "speaking permitted" sign flashes on and off, blatantly revealing the cheap trick they used to make the display flashing - they simply toggled the "on" and "off" frames.
Plot hole: There's a huge, fatal flaw with the whole concept of having guns that cannot fire on human guests as it detects the body heat. Unfortunately it's a stone cold,100% certainty that with the amount of gunplay going on in Westworld, virtually every day someone is going to be killed by a ricochet. Ricocheting bullets can and do kill people, and any scientist capable of designing guns like the ones they use in Westworld must know that.