Like the author, I also use regression, but extended to non-title players. More information: https://www.chessmonitor.com/blog/2023-elo-calculation
"People worry about kids playing with guns, and teenagers watching violent videos; we are scared that some sort of culture of violence will take them over. Nobody worries about kids listening to thousands - literally thousands - of songs about broken hearts and pain and misery and loss. The unhappiest people I know, romantically speaking, are the ones who like pop music the most; and I don't know whether pop music has caused this unhappiness, but I do know that they've been listening to the sad songs longer than they've been living the unhappy lives."
But I've wondered for awhile now, if a MTG-style card game might not be an ideal application for blockchain technology. The anti-counterfeiting concept means that limited numbers of rare (virtual) cards could be issued. A mechanism could surely be developed where the company or group in charge could periodically release new cards (perhaps after the mechanics had been voted on by participants), and issued once or twice a year. And of course, players could transfer cards to each other whenever they liked, either trading them or selling for an agreed upon price.
It just seems like a natural fit. Wonder why no one's doing it.
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At least in the Ship of Theseus paradox, there is the case where you take the old replaced parts and construct a ship from those parts - which is an interesting question, is it the original ship? In this case, the only thing consistent about the ship is the design. Take mass manufactured goods then - are they the same article because the have the same materials?
In both cases, an older version of you is "extinct", meanwhile, the latest version of you does not have any recollection of becoming extinct.
If the ship is completely destroyed and a perfect replica rebuilt elsewhere, is it the same ship? Almost certainly not.
If the ship is slowly replaced over time, is it the same ship? As a matter of form or psychological continuity as posited in the question, almost certainly.
This is sad, sad news.