Slightly off-topic: I have an honest question for all of you out there who love Advent of Code, please don't take this the wrong way, it is a real curiosity: what is it for you that makes the AoC challenge so special when compared with all of the thousands of other coding challenges/exercises/competitions out there? I've been doing coding challenges for a long time and I never got anything special out of AoC, so I'm really curious. Is it simply that it reached a wider audience?
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