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It’s just a joke. It’s referencing the fact that no matter how obsolete or obscure something is somebody out there likes things How They Are.

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I have a fork that reimplements spacebar heating.

Reference xkcd: https://xkcd.com/1172

Considering the origins of Linux I don't think joke is all there is to it. It would not surprise me at all if there were multiple such systems still maintained in Finnish universities; quite the opposite.

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