A person with infantile personality is completely harmless to society if he lacks the intelligence to become a medical doctor. Hitler was not harmless, but he would not succede today. Although I'm sure Nature can create a person to start world war III if needed.
The reason medical doctors are dangerous is because they see us as a bunch of idiots. They talk to us and they notice that they can push buttons that make us respond in a certain way. This makes them feel superior. They smile at us and this makes us respond positively. They figure we are a bunch of idiots, because we are so easily fooled. Only schizophrenics are more stupid. By the way, these people recognize each other so it is impossible to penetrate their organisations under cover. Your eyes are a reflection of your soul.
A twelve year old kid behaves and look to his surrounding to find out whether he belongs or not. A person with infantile personality starts around this age to look at the effect a certain behaviour has on the surrounding. This way they slowly start to understand how we respond to certain keys that is how to manipulate us to get what they want, which is respect. A normal person around the age of thirteen interacts with his surrounding to feel good, because we have many instincts to satisfy.
The cardinal symptoms of infantile personality is that they agree with you (suck up, kiss ass) in the beginning, but suddenly they take the lead and they want give it back. They want to dictate reality. When this happens you know you are dealing with a person with infantile personality. They either agree (kiss ass) or dictate reality to you. Normal people discuss things that is something they are not capable of.
The behaviour these people display in any kind of bureaucracy is kiss up, kick down, that's when you know you are dealing with a potential individual with infantile personality.
Medical doctors must learn to kiss ass in a very delicate way. They are only children and should be treated accordingly.