Dror Helper discusses the potential benefits and challenges of test-driven development (TDD). Some key points made include: 1) TDD involves writing tests before code to ensure functionality is tested and defined up front, though this approach seems counterintuitive to some. 2) Studies show TDD can increase development speed and lower defect rates compared to traditional development methods. However, TDD requires additional time spent writing tests initially. 3) Not all code is easily testable, such as user interfaces, but TDD can still be applied to test business logic. Overall, TDD aims to prevent defects and enable modular, maintainable code through iterative testing. 4) While TDD faces