You've never ended up with significantly more or fewer deliverables at the end of the project than were expected at the start? You've never had a project scrapped 50% (or 100%) of the way through? You've never thought to yourself "just a smidge of boost can't be too hard on the compile time" only to regret it for the next few years?
I fail to see the significance of the past here. Per the comment in question, the deliverables have already been delivered. The size and shape is known. All that is left to do is to get shovels in the ground (i.e. compile it).
