In the physical world this is fairly clear; your sense of self is multi-faceted and highly complex but the entity of “you” is well defined. You can prove your identity simply, typically by showing your ID card or by having someone vouch for you. You are a being layered with attributes. Other people may request some of these attributes: your first name at Starbucks or your shoe size at the bowling alley. But only your most trusted contacts are granted access to your entire set of attributes… or maybe you never expose your identity entirely!
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