Regan

Regan is a framework from philosophy that examines how personal identity is maintained over time, particularly when a person's qualities or circumstances change. It focuses on the importance of psychological continuity—such as memories, beliefs, and personality—in determining whether someone remains the same individual. According to Regan, it's the mental and emotional connections, rather than physical sameness, that define a person's identity across different moments. This view helps address questions about moral responsibility and what makes someone truly themselves over time.