We know so much and extraordinary. there's tremendous reporting so that the public does know a lot but it is just likely -- just a fraction of what robert mueller knows. in terms of the interviews he's conducted, any grand jury testimony he's obtained, documents, e-mails, other things he's looked at and the other thing he has access to, fisa, foreign intelligence surveillance collected from conversations that the public may never see so he knows more than we do and we'll have to watch it unfold in the coming months. >> barbara, thank you very much for joining us. david, please stick around. ...