In this work, we will try to explore the impact of (both static and dinamic) open logic theory composition over the main points of interest for a software engineer. The advantages that this approach may have with respect to traditional "advanced" approaches (such as modern object-oriented languages, like C++) will be outlined, with special regard to the level of dynamicity provided by different solutions. Finally, we will stress the impact of these enhanced dynamicity mechanisms in the architecural design of open, evolutionary (and possible reactive, event-driven) software systems.