## Help! I have an alien artefact: what can I do? Understand the system: Invest time in reviewing the code and any available documentation, and try to identify the most critical parts of the system. Develop a comprehensive characterisation test suite: This is essential to ensure that changes made to the alien artefact do not introduce bugs or unintended consequences. Prioritize changes carefully: Focus on changes that are necessary to maintain the system's functionality, rather than on non-essential cosmetic changes.