In this article, I focus on time and development in Kripke's "Naming and Necessity" by considering two topics:
(1) the evolution of scientific knowledge;
(2) the evolution of biographies.
In connection with (1) I suggest the introduction of a sentence operator for epistemic possibility and argue that some of Kripke's strong metaphysical statements are counterbalanced by rather "Popperian" epistemological considerations.
In connection with (2) I consider the idea of exploiting necessity of origin for a crossword identity criterion.
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