tl;dr:George addresses the complexity of determining adequate testing for software releases. It suggests a multi-faceted approach, emphasizing the importance of documenting the testing process, having a solid base of unit tests, not overlooking integration testing, and performing end-to-end testing for critical user journeys. The article also highlights the need to understand various testing tiers, such as performance, load, fault-tolerance, security, and usability testing. Additionally, it stresses the significance of understanding code and functionality coverage and using field feedback for process improvement.