>Lots of places have alarms that go off for propped doors and opened ones

Our doors can be propped open just so that the alarm doesn't go off (five index cards can do it).

There's security, and then there's security theater. A guy who sits in an office and watches people come through the door is theater. Cameras are real security, but they're also not proactive - they're reactive. So, let's say metal detectors - those are proactive, but they also force every individual who enters the space to be treated as a potential criminal. There's a line that needs to be drawn and my sense is that what people like Unlawful Trespass Barbie up here want is for us to cross that line in the name of safety. There are better solutions. And of course there are better experiments than "let's commit a crime to prove a point".