John Heintz, a technologist and co-founder of an AI-focused product company, discusses the vital link between psychology and user experience. He highlights how understanding emotional responses to data can inform better design. The conversation dives into user-centric interface design, emphasizing the role of psychological principles and collaboration with UX professionals. He also explores the impact of 'nudges' on user decisions and suggests revisiting foundational knowledge to enhance team performance and align software with human systems.