I think it’s important to keep track of all lessons learned throughout the project by each individual team member who has a role in this project. If one of the team members leaves the company, their log can be a useful transition document for the person taking over the role. For other projects, this document can help avoid similar mistakes already made or keep track of problems that came up during the project that need to be documented in the final report, and therefor save time and money. Logging everything also just helps yourself when you start writing up final reports. In my experience, I was working on a final report that had time points that lasted up to two years. I came into the company when this project was closing and was asked to help write the final report however it was difficult to start the report since the project had various deviations that came up throughout. I was not aware that a lessons learned document existed but that would have been very helpful in drafting up all the issues that came up throughout the years and saved time.