I don’t really think there is a way to spin it that missing a milestone on a project is a positive thing. I understand what you are saying, in that missing a milestone means you are in turn spending more time on the specific task or step, therefore better perfecting it moving forward. However, had this task been done in the same fashion on time, the next step in the process could already be underway. Use the chart in the PowerPoint for an example, there is a clear hierarchy of tasks that must get done in a timely fashion because others depend on their completion. Additionally, all of the effort that goes into planning time management, financial costs, and resources for the overall scope of the project could be thrown off track due to a missed milestone resulting in a lack of funds or resources for the project. In summation, yes missing a major milestone on a project is detrimental to the overall scope of the project.