Fictional mind control technique from Dune referenced to describe how the poster's dismissive comment deeply affected a PhD student's confidence in his thesis.
"I just said it's not, it's because people think vampires are cool and spooky and it doesnt need a Marxist reading. I must have used some Bene Gesserit Voice type thing because he seemed to really internalise everything I had said and seemed a bit lost and spent the rest of the night shrouded in deep"