The Hair protruding from the tatorah, base of the Head Tefillin.

	Why are these hair there to begin with? Should they be there and what happens if they are not? Where should they be?
	Background information: The picture shows hair protruding from the base of the Tefillin. The Tefillin parchment are tied with this hair. They are from a kosher animal and are cleaned prior to being used. The best type of hair is from a calf's tail because seeing them will remind one of the sin of the golden calf and he will remember to repent from sin.

1. The answer to the question "why must we have hair protruding from the top of the tatorah", is very simple, because the main authority book of Jewish law, the Shulchan Aruch, says, "To leave a little amount of hair on the outside of the Tefillin". If you look into the source of this you will find it stems from the mystical teachings of the Zohar. The Zohar says and I am greatly over simplifying things, that if you don't let the unholy elements have its portion participates in the Tefillin, specifically the hair protruding, then the unholy elements are able to harm him on earth and heaven.
2. Yes this hair should be there. What happens if they are not? The answer is two fold: I am going to make the distinction between hair being there from the time the Tefillin were made and later removed, to Tefillin that from the time of the manufacturer never had the hair protruding. If you bought Tefillin and they had the hair there but latter, for some reason, the hair was removed, you may continue wearing the Tefillin and bless on them. However, you should be aware that these Tefillin are not fulfilling the requirements of the Zohar. I for one would get this taken care of as quick as possible. Now let's suppose someone purchased Tefillin and they had come without this protruding hair? Please excuse my strong language but probably the person who made the Tefillin is lacking the necessary knowledge of the laws of Tefillin and the Tefillin should be really checked prior to being relied upon as being kosher Tefillin. In other words these Tefillin are not kosher until proven kosher.
3. Where should these hairs stick out? As we all know there are four batim, compartments to the head Tefillin. Each compartment gets its particular parchment and verses (the order of these parchments is what makes the difference between Rashi Tefillin and Rebenu Tam Tefillin). The hair should be sticking out from the inside wall of the parchment with the verses "VeHiYa Shemoah". When wearing Rashi Tefillin this will be on right hand side (of the wearer) and when wearing Rebenu Tam Tefillin this will be in the middle of Tefillin. (Now one can identify if his Tefillin is Rashi or Rebenu Tam).