Unplanned projects are adventures that probably would have benefitted from an end, weren’t planned properly… and so they simply sit on the shelf, unfinished.
Unfinishable projects are adventures you embark on we’re designed to not end. There’s a place for these.
A daily blog (like this one) is an Unfinishable project. It was designed to be daily. It doesn’t “finish”, it simply evolves as an ongoing adventure.
So is showing a significant other that you love them; it can be an Unfinishable project, designed to be pursuit with ad much enthusiasm today as it is in 10 years time.
Sometimes, our pursuits of important work (and of those important to us) benefit from projects designed to have no end.