Other mistake: During the scenic elevator rescue scene, a helicopter lowers the Fire Chief down to connect a cable to the top of the elevator. The cable is seen to be hanging no more than three feet from the side of the building. If this were the case, the helicopter's rotors would be hitting the building. (02:04:10 - 02:06:10)
Other mistake: At the end of the movie, the security guard (OJ Simpson) gives Mrs Mueller's cat to Harlee Claiborne. Why? OJ would have no reason to know the two were on a date, and therefore no reason to give him her cat.
Answer: Mainly it was about egos (mostly McQueen's) and a professional rivalry, not only as top movie stars, but also as auto racers. McQueen considered himself a superior driver to Newman, even though they never competed against each other. When McQueen was considered to co-star with Newman in "Butch Cassidy and the Sundance Kid," McQueen wanted top billing, then dropped out when he wouldn't receive it, even though Newman was considered the bigger star. In "The Towering Inferno," McQueen supposedly obsessed over how many lines he had compared to Newman.
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Expanding on this: McQueen's demand for top billing continued on this film (as did William Holden's, but he was never a serious candidate), which is why the end result was "staggered": McQueen's name was to the left but lower, while Newman's was higher but to the right, so both had top billing depending how one read it (left-to-right, or top-to-bottom). Studies have shown that the name audiences tend to see first is the one on the left, regardless of staggering, so McQueen may have "won" here.
Newman does get a small victory of sorts at the end of this film when the cast credits begin scrolling upward on the screen. Newman's and McQueen's names are again staggered like in the beginning intro, but Newman's name appears first as it scrolls up from the screen's bottom.
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