1) The ultra orthodox have no contact with the outside world.No TV No newspapers No books,except those relating to ,and reinforcing their own narrow beliefs. 2) They do not marry outside of their own enclaves which have the same belief systems. 3)Therefore any 'deficiency' or anomaly whether physically exterior,will be inherited and magnified by inbreeding. 4) Read any book describing brain mapping.It will tell us that most psychological illnesses ,previously thought to be non physical ,have now been proved to be ,in fact,physical disorders of the structure of the brain,or,at least,related to variations in its connections. 5) In consideration of the above,I suggest that ultra orthodoxy,is a specific case of Obsessive Compulsive Disorder.,which is passed on genetically and magnified by the seclusion and isolation of these people.Since they get no other source of information,they are unable to question their faith and belief systems.As they understand the world at large,it is out of step with them and not the other way round.
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from the article: Mea She'arim to ban women from certain Jerusalem streets during Sukkot