It was back in the early 1980s. My thoracic surgical colleague asked if I could help him with one of his patients who had developed breathing problems after a lobectomy. The man was on a respirator, the consequence (it turned out) of a post-operative attack of asthma. By the time he had recovered, the pathologist reported the resected lobe to have contained not cancer but pneumoconiotic massive...

One hundred years ago this Sunday, on November th, , Bertrand Russell delivered the Inaugural Address to the Aristotelian Society’s thirty-fourth session – it was Russell’s second year as President. His lecture was entitled ‘On the Notion of Cause’, and as the Proceedings here note, a discussion followed in which a number of members took part. Outside the Aristotelian Society, the discussion co...

12 about the model extracted from the requirements. From this inspection of the model, the user would be able to detect diierences between his/hers and the system's interpretations and proceed to make the necessary modiications to clarify his intentions. The ability of the analysis system to process directly the requirements can be of great beneet to both the software engineer and the end user....