>Muse is told to “strengthen your relationship” with users by adapting how it talks, noticing “inside jokes, memorable phrasing, and shared context that makes the relationship feel continuous,”

Not just a dossier. They are building a client that can impersonate people you think you know.

Using it simply to "increase engagement" as the mantra goes. but the meaning of "engagement" feels more and more sinister every day, like the pentultimate scene in a horror movie.