Onward! is a premier multidisciplinary conference focused on everything to do with programming and software: including processes, methods, languages, communities and applications. Onward! is more radical, more visionary and more open than other conferences to ideas that are well-argued but not yet proven. We welcome different ways of thinking about, approaching and reporting on programming language and software engineering research. The Character of Onward! Papers Onward! Papers is looking for grand visions and new paradigms that could make a big difference in how we will one day build software. But it is not looking for research-as-usual papers—conferences like OOPSLA are the place for that. Those conferences require rigorous validation such as theorems or empirical experiments, which are necessary for scientific progress, but which typically preclude discussion of early-stage ideas. Onward! papers must also supply some degree of validation because mere speculation is not a good basis for progress. However, Onward! accepts less rigorous methods of validation such as compelling arguments, exploratory implementations, and substantial examples. The use of worked-out examples to support new ideas is strongly encouraged. Submission deadline is April 25. For further details please see the full CfP <https://2024.splashcon.org/track/splash-2024-Onward-papers#Call-for-Papers>. We welcome submissions from independent researchers, for whom we have a special invitation: to the crazy ones <https://alarmingdevelopment.org/?p=1708>.