It happened to me to watch today the brilliant old Soviet move about the routine of the pre-WWI Russian navy. Just for reference for those readers who are not in military and naval history:
the ships of that time, I mean the period since 1905 till 1914 had really huge crews sometimes more than 1 000 mates. All those guys, especially the low ranks, in that mechanic pre-electronic era had to function like mechanisms, more precisely human addition to mechanisms, due to the very low level of automation in those times. In other words they had to switch some flips, fill some tubes, open hatches etc. They had to perform their duties quickly and precisely following orders of superiors.
Understanding that it is not hard to imagine what kind of personality and more important behaviour the sailors had to have. The mechanic like personality and behaviour. They were human robots in other words. And all kinds of human malfunctions atirobotic o arobotic were absolutely unacceptable, obviously during engagements with an enemy and also in the peace time.
I'd like to focus on the second. In order to control hundreds of men performing hard duties in an unfriendly oceanic environment the officers had to have total superiority and any behaviour challenging that image was a real thereat.
Let's consider the typical low rank answer 'Yes, sir'. This short phrase is the key to the naval hierarchy.
It shows submition to a superior. And it must be said loudly, clearly, submissively. There is no need to sing that phrase, no whisper, no mumble. It must be said exactly in the manner considered submissive, but functional in the particular society. There is no need to bow saying that phrase, at least all the time, because bowing could be lethal delay in the time of engagement or even some peaceful activity on board, for example like explosives loading.
And it is clear that sailors who don't get it and start to bow always seeing an officer of a nobel origin, singing all his titules, and trying to fall on their knees in the presence of a duke or a count
are not functional. They are good slaves, but bad robots. Their behaviour is redundantly theatrical.
On the other hand, those who don't accept officers authority and this attitude could be detected by saying 'Yes, sir' phrase very quickly, or unclear, with a shadow of smile or even laughter on their lips are very bad robots, they can make a mutiny or switch to an enemy side.
The psychiatry appeared as the branch of the scientific medicine alongside with the development of conscriptive armies and mechanised navies in the end of the 19th century. The task of a psychiatrist was to detect the bad robots, those who could not get how to behave properly in the specific situations, especially in the situations of military functions performance. Sailors were given some freedom on shores, because obviously it is impossible to perform robotic functions all the time. Taking this into account we can discover the pattern of normality the psychiatry uses. This is the ability to be a mechanism, to be human extension of a machine.
We also understand now why many kinds of mental dysfunctions are excepted worldwide. That's because modern style armies existing in many countries require absolutely identical mechanic personalities who just serve to different lords and ideas, but act exactly in the same way.
I guess that everyone agree that the way of being a human machine is absolutely unnatural, it could be hardly stand by every person. That's why in the movie i've mentioned in the beginning of the post all protagonists actions and speeches are pretty theatrical. I think that it was even written in the military regulations of that time which gestures were allowed for senior officers, which for the middle, and which for the lowest ranks. Also word usage and intonations. For example, excessive thinking considered to be a mental dysfunction, and no wonder why, because a sailor thinking too much over officer's order in the time of engagement, storm or even in in the cockpit during his free time is not functional. He must act like a good jenny no more and no less.
Sailors of all navies are also known by they notorious behaviour on shore. This kind of behaviour has been portrayed in cinematography, for example in the beginning of the German movie "Das Boot". It is pretty understandable because it is absolutely inhuman to function like a jenny, crane, some flippers switcher etc. Human nature rebel against those hush restrains. People need to be just people the free thinking and feeling creature characterised by highly unpredictable behaviour.
Writing this I really hope that general public and even some psychiatrists will undertake a very hard, but the only posible job of rethinking and excluding some diagnosis, maybe all existing diagnosis determined by the need of the old fashioned military regulation, maybe all kinds of military regulations. Probably the perfect fit to those regulations is the sign of significant personality impair, because it is not human to be a robot.