@dredmorbius The challenge will be *finding* people across instances - and knowing which address is the "right" one. It is the issue with email. How do you know which email address to use for me? "Dan York" is a pretty generic name and there are a lot of us. Which one is me?

I do think one of the drives toward centralization was this "directory dilemma". I do it myself - I don't know which email to use for someone, so I send them a direct message via FB or Twitter.

@danyork I'm also starting to wonder if we're not confounding "what is your identity" with "how can I direct a message /to/ you" and "how can I determine a message is /from/ you". These are ... subtly different.

Reputation is another huge factor. Payments-oriented questions, and rights-oriented questions, would be additional dimensions.

We're in a world of usernames and passwords in large part because those are the models computers find easier. They may not fit the world.

@dredmorbius Right. Those are nuances in "identity" that are important.

@danyork Crazy thing: I've been dealing with this stuff for 3-4 decades, and I'm only starting to think about it in these terms.

I don't know if I'm slow or if the problem is harder than most people realise.

@dredmorbius The problem is definitely harder than most people realize. I'm right there with you in being online for 30+ years... and the *nuances* around identity are where the hard challenges are.