Style or Isochrestic Variation? A Reply to Sackett

Isochrestic behavior as Sackett describes it is recognized to be one of the important sources of variation in material culture. The behavioral bases for isochrestic variation and for what I describe as stylistic variation are contrasted and some of their implications for variation in material culture are discussed. Kalahari San projectile points are then reexamined within the framework of isochrestic and stylistic behavior using both historical and contextual data. It is concluded that variation in San projectile points better fits the expectations of stylistic than isochrestic behavior, at least with our current understanding of isochrestic behavior.