 Clearly, bridge principles do not solve any philosophical questions such as the ‘is-ought problem’; nonetheless, they contribute to clarify the problem and to uncover hidden assumptions. The idea of combining logics lend clarification to questions of this kind by making clear that, for instance, ‘is’ and ‘ought’ are indeed independent notions. This is elucidated through a formal analysis of the composition of the logics involved (in this case, alethic and deontic) or by decomposition of the complex logic (in this case, bimodal) into simpler ones. In such circumstances, combining logics can be perceived as a tool for simplifying problems involving heterogeneous reasoning.