To many readers, Mozart/Oz represents a new addition to the pantheon of p- gramming systems. One way of evaluating a newcomer is through the eyes of the classics, for example Kernighan and Pike's The Practice of Programming, a bookthatconcludeswithsixlastingconcepts: simplicityandclarity, generality, evolution, interfaces, automation, andnotation.KernighanandPikeconcentrate on using standard languages such as C and Java to implement these concepts, but it is instructive to see how a multiparadigm language such as Oz changes the outlook. Oz's concurrency model yields simplicity and clarity...