A few days ago, the shocking shooting at Brown University and the murder at the home of an MIT professor turned out to be committed by the same person. The suspect, Claudio Valente (who has committed suicide), is a 48-year-old Portuguese man who was a PhD student at Brown University from 2000 to 2001, but it seems he did not complete his degree. So, don't mess with any PhD students, because they are all psychologically disturbed (including me). Revenge for a PhD is never too late, even after ten years.