[discodave]

As a thought experiment, could a witness protection program (i.e. an arm of the government) issue a new/fake SSN? Yes.

Could they change your retina? Maybe some surgery exists to do this, but it sounds risky/complicated!

[taeric]

This is somewhat weak with the argument here, though? The idea would be that you could get a new "world coin address," and I see no reason that couldn't be doable.

That is, the thought experiment here is not that people interact with your retina identity, but with an address that has been confirmed to be associated with a living person. There will have to be ways to build "collective" groups in this landscape, as such there will have to be other webs of trust on top of it. Right?

To be clear, I'm not convinced world coin is a good idea, but I'm not sure this is a clear take down of it?