The question of how original something is makes for endless amusement. We've all heard the story of "my great-great-grandfather's axe." It's 200 years old but the head has been changed 7 times and the handle 5 times. Ha, ha.
When I did my M.A. in Philosophy, one of my favourite conundrums was The Ship of Theseus. Philosophers can never decide on a final answer for anything anyhow. I think it was Plato who told this story. Theseus would pull into harbour and go get drunk with his crew. Unbeknownst to Theseus, thieves stole a few pieces of his ship, replacing those pieces with brand new pieces. Theseus never noticed, of course, and he kept coming back to that harbour every few weeks. He kept getting drunk, the thieves kept stealing bits of his ship, and you can imagine how the story ends. Eventually every piece of Theseus's ship had been replaced, but it was still the same ship.
At least as far as Theseus knew. The tricky part is that the thieves took the pieces over to the next Greek island and, bit by little bit, put Theseus's original ship back together there, without Theseus every realizing what they were up to.
So which ship is The Ship of Theseus? I'm sure K&K or Millers or that fellow over in Poland have thought long and hard about this story.
Maybe if Pagoda 000015 gets back on the road, it should have the licence plate THESEUS. You'd get pulled over by a lot of philosophers.
Note added later: the WikiPedia article tells me it was Plutarch, not Plato, who wrote up the conundrum of the Ship of Theseus, and that Thomas Hobbes (much later) added the twist about re-creating the original ship out of the original parts. Also, that the story of grandfather's ax is often connected with George Washington. Maybe he used it to chop down the cherry tree? Cees, you've put your finger on the interesting point that Philosophers seem incapable of accepting the obvious answer, maybe because it would them out of business. Marcus, I'm not sure how the sports car writer got Pericles involved, because Pericles was a statesman, not a sailor, and wouldn't have had a ship to whistle in in the first place. Not that any of this is important, but I like to help get the details right when I can