. . . If all anyone wants to do is quibble about whether or not to call it a restoration or a rebuild, well, they have too much time on their hands.
Someone over on the HobbyTalk forum mentioned the Ship of Theseus paradox
. I never knew it had that name until now. You learn something new every day.
At any rate, since most of the Galileo
's metal parts (framework, nacelles, wing/pylon structures) are still intact, the old girl is probably still more than 50 percent original if you go by weight.