2020-01-08 UTC
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petermolnar [tantek]: lessons learnt from idealized, nonexistent systems are still lessons, so I disagree with the complete waste of time part. webmentions are decoupled, yes, but in the end, their principal - not the way how things work - share similarities with the idea of symmetrical links. You are completely correct that this would not, in any way, address identity issues at all on it's own.