In this paper I focus on the conditions that have to be met for Chisholm’s
Paradox (CP) to occur. My claim is that identity and structure are notions closely
related to each other. I propose a discussion in which the minimal framework for CP
is set, then analyze the paradox in terms of S5, and suggest that in order to capture the
core of the paradox one should use a dynamic valuation function for the model.
Identity appears, at this point, to be dependent upon a structuralist point of vie
