In my opinion, I think that it really depends on the milestone that you missed and what the results would’ve been had you not missed the milestone. Missing a milestone could make the project run easier because you are focusing on less things and it will most definitely save more money since resources are diverted to other parts of the project. It’s really hard to say without giving a concrete example if whether missing the milestone is a “blessing in disguise” or just bad. I think that it needs to be considered in a case-by-case basis. Normally, missing a milestone would be considered bad because if it didn’t matter, then it wouldn’t be considered a milestone in the first place. However, if it can be achieved in a later project, then missing it wouldn’t be a bad thing because things can change in a project. You may not get enough staff or money to fund your project; therefore, cuts would need to be made, and one area would be the milestones that you are trying to achieve. Its not the end of the world, but you should always try your best to achieve all milestones.