Quasicrystals and Imperfectly Ordered Crystals

In 1994 we will mark the tenth anniversary of the discovery of quasicrystals, aperiodic crystals which lie outside the framework of traditional crystallography and which have disturbed the theory and practice of solid state physics, bringing in new perspectives. Already a substantial international community working on this topic has developed, with its own social structure, and it is time to assess the progress of the past decade and to consider future possibilities.