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Project deliverables are the outputs got from a project that normally give a beneficial change. They are provided to the project sponsors at the end of every project. They can be for both internal users and the external customers.
This is a tricky thing ... sometimes it is easy and straight forward, other times it is very misleading and devious thing
Unfortunately, project progress/deliverables are not liner in nature and many practicioners realize later on that the last10% or even the last1% of the project and its deliverables may take for ever.
One of the jokes about this problem is that project managers may tend to believe that9 women can deliver a baby in one month, because one woman takes9 months to deliver the baby !!
From my experience in the field, I have noticed that project manager tend to use pre-fixed percentage value for the complettion of the project based on some criteria/triggers/indicators .. like5% or10% upon project lanunch,25% or30% after few milestones, 50% ,75% later on, and would stay at90% for very very long times till the project is eventually declared complete !!
What I would suggest in these situations of uncertainty and unknowns, is to have a Subject Matter Expert (SME) with adequate knowledge/experience in this type of projects and the nature of the deliverables .... to particiapte and advise on the true percentage of completion !!
