Nice read. Seems to only be an issue though if the unknown is something that the person would object to. Otherwise it's just a nice surprise, such as restoring work when you reopen an app.
If I say this to anyone, people think I'm paranoid of the digital improvement. Laliga and Facebook of all…Facebook has really been in the lime light for the few days and all for good reasons I see. And I don't think the companies will themselves come forward to bridge the possibility gap since they know that once the user knows, then it'll never work.
That Facebook ninja-image-thing really creeped me out. Dark Patterns are an important topic to bring back to the table for any product team. Nice work.