Re: probably the paper model that took the longest to finish EVER
It shows that there are things you can do with paper you can't do with a computer.
For the TOS Enterprise deck plan project I use paper copies of the actual studio set as jigsaw puzzle parts. I wonder if you could move virtual pieces as easily around as the paper ones.
"The first duty of every Starfleet officer is to the truth, whether it's scientific truth or historical truth or personal truth! It is the guiding principle on which Starfleet is based! Jean-Luc Picard