This document summarizes an article about understanding the psychology of new product adoption. It discusses how consumers irrationally overvalue old products and companies irrationally overvalue new innovations. It presents a behavioral framework involving new products/technologies, consumers who must adopt them, and the companies designing them. It also discusses balancing product improvements with required behavior changes, accepting resistance to change, and ways to minimize resistance such as seeking early adopters, making products compatible with existing behaviors, and continuously improving products.