Ooh, Atari and the paradox of "My Grandfather's Axe."
Namely: "This axe is the one my grandfather used when he was young. Over the years, he used it hard, and had to replace the handle a few times. Dad used it, too, and eventually the head was just so worn that we had to get a new one forged. I had to replace the pins that hold the head to the handle last year; the original ones had given their all.
If I handed you a set of pins, an axe head, and a handle, all cut and shaped such that they could be used as replacement parts for my grandfather's axe, and you assembled a new one, you would not have my grandfather's axe. You would have a new axe. There remains not a single part of this axe that my grandfather ever used, himself, yet this remains my grandfather's axe."