Well, I’m sitting here wondering why an individual in a PhD program for Neuroscience would be keeping a logbook of his own psychiatric state. A logbook implies several things. One would be that others were aware of his mental state. Another would be that others were interested in his mental state. Given the nature of the program, that can lead in a direction that the university would prefer not to be pursued.
If you take the road that it had been opened and reviewed by at least one person - it lends more credence to the idea that something was going on- such as experimentation.
If you take the road that it hadn’t been opened - it makes no sense that this would have been sent at least a week before the events - because something should have been done about it. There is a duty if there is a threat. So why would he give a warning before the events when it could have stopped him.
An even more cynical person might question the post mark and the reality of it even being there until after the fact.
I am VERY familiar with how Universities work - what their mindset is. I’m not saying anyone received this before the actual act, but I can tell you, if it had, the very first people that would have been alerted besides the President of the University, etc. would have been the University Lawyers.
Call me cynical. After all, this is the same university that made Ward Churchill a professor of 'ethnic' studies.