Dependency as Question Entailment

In the past few years, a tight connection has emerged between logics of dependency and logics of questions. The aim of this paper is to show that this connection stems from a fundamental relation existing between dependency and questions. Once we expand our view on logic by bringing questions into the picture, dependency emerges as a facet of the fundamental logical notion of entailment, namely entailment among questions. Besides providing an insightful conceptual picture, this perspective yields a general and well-behaved way of dealing with dependency in logical systems.