Abstract

In this paper, I examine van Fraassen's original version of modal interpretations, which have the increasing significance in the foundational research concerning elementary quantum mechanics. I argue that although van Fraassen's modal interpretation has a salient advantage over the standard Dirac-von Neumann interpretation with the projection postulate, it is confronted with two kinds of interpretive difficulties stemmed from one and the same fact of experience, repeatability of the first kind measurement.