 It is reasonable to expect that a method for combining logics would work in two opposite directions: on the one hand, a logic that one wants to investigate could be decomposed into factors of lesser complexity; for instance, a bimodal alethic-deontic logic could be decomposed into its alethic and deontic fragments. In this case, it would be relevant to see if the logic under investigation is the least extension of its factors, or if additional bridge principles would have to be added. This approach, in which a given logic is decomposed into (possibly) simpler factors, is said to be a process of splitting logics.