Corrected entry: When the seaplane leaves San Francisco it flies west over the complete Golden Gate bridge. The movie is set in 1936, the Golden Gate bridge wasn't completed until 1937.
Corrected entry: After Indiana Jones has run the staff car containing Belloq, Toht, et al, off the road to Cairo with the truck, look at the driver of the staff car- he immediately anticipates Paul Freeman (Belloq) striking him two seconds before Freeman actually does by covering his head to protect himself from Freeman's hit.
Corrected entry: When Indiana and the other guy are removing the stone cover where the Ark is kept, they are struggling, yet they can lift the Ark out with relative ease. The Ark is made of solid gold and the lid itself is said to need two men to lift, plus it should contain the two stone tablets with the ten commandments on. It should have weighed just as much if not more than the stone covering.