Mastodon's federation introduces UX challenges.

One that worries me a lot is about message forgery. Anyone can forge a twoot, even cross-server.

Whereas Twitter Inc might be trustworthy enough to not forge transcripts. Anyone can run a Mastodon server and might want to abuse it to influence people (see Russian troll campaigns).

Should Mastodon "home servers" cryptographically sign updates? Should there be end-to-end signatures? Anyone has thoughts on this?

I was discussing autonomous vehicles with a Frenchman. Summing it up by: The Turing test for autonomous vehicles is to be able to cross the place de l'étoile (Paris) quickly & safely.