 Generally, the SSD deals with problems of universal quantification, as for example the uses of the word omnis (’all’). Bacon pays close attention to words that present philosophical difficulties, such as ‘infinite’, ‘whole’, and ‘negation’. The common logical topics are covered. Still, Bacon shows some originality in his treatment of ‘inclusion’ or ‘scope’ in quantification. He also develops the outline of what will become his own contribution in the 1260s, i.e., his analysis of a “production of speech”. Bacon develops this analysis to deal with sentences such as ‘Every animal is either rational or irrational’. Here, his contemporaries invoked a theory of natural sense to account for the provision of semantic information on the basis of the order of the presentation of the terms. But Bacon insists that one must take into account (a) the signifying intention of the speaker, (b) the linguistic expression, and (c) the sense that the listener provides. Bacon presents two basic positions: an expression must have parts that enable the hearer to make an interpretation that will correspond with the intention of the speaker. Thus, the actual expression alone is necessary but not sufficient for an account of the meaning. A linguistic analysis that involves speaker/hearer/expression is also required.