But really, what you're complaining about is CYA (cover your ass) security. It's a lot easier for the person in charge to decide to clear out the building, and answer to a bit of grumbling with "just doing my job to keep you people safe" than it is to deal with the (extremely unlikely) fallout that would come from ignoring a real bomb.
Most people don't believe a bomb will actually blow up or something on campus. I think what freaks people out is notion that the person(s) making the bomb threats are trying to observe the patterns and behaviors of how people react during an evacuation.
Pitt has the tallest educational building in the US (Cathedral of Learning - which has had 14 bomb threats), plus many other buildings on campus are rather tall too. I cannot begin to imagine how exhausting these bomb threats have been to the police. Many people don't want to evacuate the buildings either. But what if some lunatic takes advantage of how desensitized and relax people are becoming to go a shooting spree... that is the more scary thought.
Honestly it seems like person(s) making the bomb threats becomes more agressive with the threats when the university makes a public statement about it or when the police think they've caught someone or have a lead. A part of me wonders if the university might provoke the person(s) behind this to do something more extreme if the bomb threats started to be ignored.
If you are uncertain if a threat was ever called in for either, how are those answers to my question? I was specifically asking about threats that were first called in, then followed up upon. To the best of my knowledge, neither of those qualify.