A study compared the perceptions of two experts from different cultural backgrounds concerning salience of a variety of errors typical of the English written by Hong Kong secondary and college students. A book on English error types written by a Hong-Kong born, fluent Chinese-English bilingual linguist was analyzed for its emphases, and a list of salient error types was created for comparison. Differences in error categorization (sometimes too broad or superficial, sometimes too specific) and major disparities in emphasis were found. The native speaker's list of error types featured tenses, modals, preposition, and connectives much more prominently and featured comparatives, determiners, concord, and some sentence structure problems less prominently. Ideas of which comparatives to include differed: the non-native speaker's work focused on usage details of individual items, while the native speaker's interest was in entire constructions in which a range of errors may appear. Only 14 of the native speaker's 96 specific entries, and 3 marginal entries, were also on the non-native speaker's list. Those entries are examined in greater detail. It is proposed that this comparison provides evidence of disparity in intuition, and suggests that development of a standard for error correction is desirable. (MSE)