Hate to say it, but alot of pilots are ex-military. what this means is that they volunteered to go burn Women, children, house, schools, shoot people they never met for oil and rape, pillage and plunder. Though this guy was n ot a USian, veterans in the US have a much higher incidence of mental probl ems than the populus at large.
Nother thing they don't tell you is that most of the school shooters here w ere on anti-depressants, SSRIs or who knows what. And I wonder if they sell that smoking cessation aid in other countries that induces suicidal tenden cies. (now that REALLY works !)
All in all, I think mental disorders are on the rise and the detection and treatment of same leave much to be desired. they do not really know what th ey're doing. They'll tell you how this chemical bonds to that chemical in t he brain and affects this or that, but there is no way they can tell the ac tual effects on the user. You would have to read minds to do that. Just lik e the rest of medicine, the simple fact is that they think they know alot m ore than they realy know. One of the biggest problems is they do not suffic iently take into accouint different people with differing body and brain ch emistries.
This has resulted in alot of woe. Even in physiology, they are dooing peopl e a great disservice not recognizing tht different people have different di etary rrequirements. The food pyramid is a joke for everyone, but the fact is that an person of African descent needs a slightly different diet than a Swede for example. But the mantra of "we are all the same under the skin" prevails in the industry.
This applies in spades in the phychology industry, where empirical data are even more rare. I know there are contraindications like don't give a scizo phrenic this, don't give a manic depressive that, but that list is so far f rom exhaustive they shouldn't even be using those drugs.
But then, what is the root cause of all this ? I am lumping it all in one h ere, any psychological abnormality. Well I've an article about that publish ed back in the 1970s about that form IBM's "Think" magazine called "Can We Survive The Madding Crowd ?". That and a buinch of other things indicate th at thouggh hunger is not the main issue, overpopulation is. It also goes in to societal differences, for example the Japanese who live together and onl y have paper walls. It's not that they're poor, it's apparently like they r ent an apartment and bring their walls in, put them where they want. But yo u really have very little privacy. Americans would go nucking futs in a mat ter of days but the Japanese (et alii) society has conditioned the people t o that over generations.
If it hadn't, like the mice in that article, there would be rape gangs, peo ple hurting and killing their young, no monogamy. Oh wait, we got that don' t we ?
Here's a scan of a reprint of that article found in a Young People's Scienc e Encyclopedia annual supplement :
They make a pretty good case and the sika deer study ws pretty interesting. they adapted to having too much food. Initially they overpopulated the isl and but after so many years, whatever happened and they stopped doing that.
Seems that humans do not quite share that ability to adapt.