## ABSTRACT

NSA has been in the public domain for over a quarter of a century — in effect since the appearance of Abraham Robinson’s seminal text [1] in the 1960’s. It might have been expected that by this time it would have become generally accepted as a valuable and important tool, not only for the working mathematician but also for the general user of mathematics (in particular for the average engineer or physicist). As a matter of hard fact this has not happened. For example, as recently as March 1994, the Institute of Mathematics and its Applications (IMA) held a conference on “The Mathematical Education of Engineers” at Loughborough University, England. The central theme was the increasingly difficult problem of teaching mathematics to an engineering audience, and the SEFI (Société Européene pour la Formation des Ingénieurs) presented a possible “Core Curriculum in Mathematics for the European Engineer”. Regrettably no mention of NSA appeared in the latter document and the overwhelming majority of the participants were almost wholly unaware of NSA and of its potential value in this context.