Explore a conference talk from Devoxx Poland 2022 featuring Anja Kunkel and Stephan Fehmel discussing the challenges of working with legacy code and strategies for effectively modifying it. Learn about the common pitfalls of "don't touch" code and gain insights into techniques for safely refactoring and improving existing codebases. Discover best practices for understanding, testing, and gradually updating legacy systems without introducing new bugs or disrupting functionality. Gain valuable knowledge on how to approach and modernize older code, making it more maintainable and adaptable to current development needs.