Other mistake: Towards the end of the movie, when Superman drops Gus off at the coal mine, Gus begins talking with the coal miners about him and Superman. He then rips open his shirt (as if he had a Superman costume on underneath). How did Gus know that Clark Kent tore his shirt like that in order to change into Superman, or keeps his suit under his clothes at all? The only people who know this fact are the ones who have seen the transformation from Clark to Superman, i.e. the audience.
Other mistake: The movies show that Superman can talk and live in space as normally as on earth, with no extra effort needed. Therefore, the scene of Superman choking and suffering inside a shield/ bubble with no air is totally senseless. The Krypotnite laser which does choke him appears after he has destroyed the bubble.
Other mistake: While on the skiing slope, Gus catches speed and skis away. The problem is he is always on the flat side of the slope, it's impossible to gain speed.
Other mistake: When Superman uses his heat vision against the mirror, the beam should be reflected just like in Superman 2 with Zod.
Other mistake: As Lorelei is held on the wall, there appears to be a chrome ball attached to the belt she has on to give a reference point, and animation was added to complete the scene.
Answer: There were rumors that Hackman was angry with the Salkind Brothers (the producers) for firing director Richard Donner, though Hackman later disputed saying that. His explanation, though he may have been downplaying the real reason, was that he had a number of other movie projects at the time, and he also did not wish to continually play the same villain in an ongoing movie series.
raywest ★