However I don't believe I misunderstand your point. The dialogue is almost certainly scripted, presumably by an advertisement professional. You believe you know why the advertisement person wrote it that way. You think the man was scripted to be "polite" to the woman he was watching in the context of the scene and that particular line. You think your understanding of the society of the time explains the line.
I offered an alternative interpretation. The advertisement professional wanted to begin with something winkingly sexy so had a bunch of guys say a woman was attractive.
I don't even know what to make of the statement that "for politeness is not a thing easily turned on and off." A stock character in an IBM ad doesn't have an internal life so does not struggle to be polite or impolite.
This whole framing would make more sense to me if we were talking about a male game show host (a real living breathing person) trying to be polite to a real life female contestant in an old game show.
However I don't believe I misunderstand your point. The dialogue is almost certainly scripted, presumably by an advertisement professional. You believe you know why the advertisement person wrote it that way. You think the man was scripted to be "polite" to the woman he was watching in the context of the scene and that particular line. You think your understanding of the society of the time explains the line.
I offered an alternative interpretation. The advertisement professional wanted to begin with something winkingly sexy so had a bunch of guys say a woman was attractive.
I don't even know what to make of the statement that "for politeness is not a thing easily turned on and off." A stock character in an IBM ad doesn't have an internal life so does not struggle to be polite or impolite.
This whole framing would make more sense to me if we were talking about a male game show host (a real living breathing person) trying to be polite to a real life female contestant in an old game show.