In this keynote, we explore the hidden psychological mechanisms that makes software so irresistibly engaging—and the profound implications this has for testing. Through examples and behavioral science models, attendees will discover how modern digital products shape habits, influence emotions, and capture user attention, often without conscious awareness. Participants will learn why the most successful products aren’t always the best ones, but the ones that achieve “mind monopoly” by forming deep behavioral loops. The session provides practical insights for testers: how to go beyond functional checks, evaluate habit forming potential, identify ethical risks, and ensure that products are not only high quality but also responsibly designed.