Abstract

In logic books ordinary language examples are often thought to be easier to understand, as it is presupposed or suggested, that their logical structure is obvious. This suggestion is not only incorrect; moreover, as this paper shows , the alleged simplification in fact entails additional problems: The notion of 'logical structure' remains vague, and confusion between the logical features of statements and the grammatical properties of ordinary language sentences is invoked; some arbitrariness and circles in the presentation are also inevitable. It would be more helpful to clearly state the conventional character of logical systems as well as to stress the importance of semantical analysis in order to find out the logical structure of statements