"The most educated presidential candidate in history"...? Really? Are you forgetting Ben Carson then? Or is she the 'most educated' because of her undergrad work? (Oh, wait, almost everyone does undergrad work before they go to medical school.) Did you forget that Bill Clinton was a Rhodes Scholar? Or that Barack Obama was a law professor as well as being a civil rights attorney and specializing in constitutional law?
Given that Stein's own campaign has said they can't win, but that they can prevent Harris from winning, it's pretty clear that she knows exactly what she's doing. The only 3rd party candidate that has had a snowball's chance in hell of winning in the last 75 years has been H. Ross Perot.
If he's still alive, not in prison, and capable of doing more than drooling? Of course he will run again. He has way too much power with the people that vote in Republican primaries; politicians that don't give him lip services don't survive primary runs. And, in turn, that's infected the whole party.