... construction problem is of practical importance for computational models of natural language interaction, and since the concept of iterated action is central to planning, the generalisation ... question occurred on different occasions, in sequence. 3. GENERALISATION On the basis of the descriptions given in sections I and 2 we can argue for a generalisation over distributives and ... single occasion of giving, taking place once only. One could even imagine Mary handing a book to each of two boys simultaneously, with either hand. Or consider (7), on the interpretation where...