The document discusses the importance of properly closing projects. It describes the goals of project closing as ensuring project outputs can be used, obligations are fulfilled, and lessons are learned. Reasons why projects are not properly closed include lack of interest, decreasing motivation over time, and underestimating how knowledge can be lost. The key steps of project closing are getting client acceptance, installing deliverables, archiving documents, conducting a post-mortem review, and reassigning staff. Post-mortems provide a critical analysis to identify strengths, weaknesses, and lessons for improving future projects.