I agree with Longer Ron; it is as easy to get things right than not bother and get things wrong. Any group of 'enacters' would have helped. It also throws the rest of the film into doubt. If one notes simple errors, it leaves one wondering what more important things have been ignored in the production of the films. In Sci-Fi or blatant comedy, accuracy is probably not too important or irrelevant but in these two films, they were dealing serious issues - 'spoiling the ship for a h'path of tar'.
O-D