While organising my papers using :
I wish tagging systems had 'implications' between tags. So if I add a more specific tag to an item it implies the more general ones too. Eg. I'm tired of adding 'Algebraic Effects', 'Effect Systems', and 'Effects' to the same paper…
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Also would be cool if there was some kind of magical machine learning thing I could train to help me tag stuff. Like, it weights my decisions more, but gives suggestions that I can commit to.