It’s a completed piece of art or a completed task within the current capacity, but as a puzzle I consider it incomplete. She could still miraculously get those missing pieces and then the puzzle would be “more completed” in the same unit of measurement, which in my opinion just means that it isn’t complete now. Although, that raises the question if a puzzle with a few damaged pieces is complete… I hope the pieces remain missing. That’s a fantastic decoration idea!

I dig this question. I have a similar problem in my personal task management where I differentiate between efforts invested in general and efforts invested into completed tasks only. Since those are just solo projects, I don’t invest a lot of time into requirements measurement and the output of a task is rarely what I had in mind. Looking back my judgements on what is completed are very inconsistent and the numbers are rather meaningless :/