There have been many occasions when I met colleagues from AI, systems, security, or formal methods at conferences and introduced myself as someone working on SE4AI (Software Engineering for Artificial Intelligence) or AI trustworthiness assurance. Almost invariably, the conversation would proceed with a moment of polite acknowledgment followed by a brief pause that is difficult to miss. Underneath the friendly nods and professional gestures, there is often a sense of puzzlement: what exactly is …