Wonder why Berkeley didn’t offer her PhD admission given that she was already working with the Prof there.

> When I was an undergraduate at MIT I loved it. I thought it was a great place, and I wanted to go to graduate school there too, of course. But when I went to Professor Slater and told him of my intentions, he said, "We won’t let you in here."

> I said, "What?"

> Slater said, "Why do you think you should go to graduate school at MIT?"

> "Because MIT is the best school for science in the country."

> "You think that?"

> "Yeah."

> "That's why you should go to some other school. You should find out how the rest of the world is."

-- Surely You're Joking Mr. Feynman

I've been at institutions that explicitly discourage that because of that reason. They want you to get breadth of experience rather than work with the same one person for your early career.