The script contains British-60s slang (“bird,” “her Majesty’s pleasure,” “self-preservation society”) that dubbing often flattens into generic dialogue. Subtitles can preserve the original words with a brief footnote or context, whereas dubbing forces unnatural equivalents. For example, a dubbed line might lose the class commentary in “You’ve got a engagement, you can’t get out of—like a hair lip,” but subtitles keep the jarring, period-specific rudeness intact.
We can categorize subtitle approaches into three types, using specific scenes. the italian job 1969 subtitles better