Abstract
Dynamic Epistemic Logic (DEL) provides a very expressive framework for planning, called epistemic planning. In this paper, we discuss the shortcomings of the traditional DEL semantics, based on Kripke models, and we propose a formulation of epistemic planning based on a different kind of object, called possibility. We argue that the resulting framework, named delphic, constitutes a valid alternative, since it provides a more compact representation of epistemic information and a lighter update mechanism. We conclude by discussing the advantages of delphic, both theoretically and in terms of implementation.