内容：
The mathematical world hasn't yet appreciated the advent of a marvelously enlarged and improved number system, J H Conway's surreal numbers. In a compellingly simple and natural way, they simultaneously encompass the usual real numbers, Cantor's ordinal numbers, and a slew of engendered numbers of enormously varied sizes.
(For the first time we have genuine full-status infinitesimals - *pace* A Robinson ... also Bishop Berkeley).They may be expected to play a large and increasing role in analysis and other branches of mathematics.