By N.T. Kendall

Abstract
This paper describes some of the developments that have taken place over the past ten years, and then attempts to bring them into perspective in order to focus on the future.
Keywords: None.

Sintesis
Este articulo describe alguno desarrollos que hall tomado lugar durante los ultirnos diez anos, e intentos de ponerlos en perspectiva para lograr enfocarnos hacia el futuro.