Advantages and Disadvantages

Every character has the potential to be born with certain advantages that make him stand out from the rest.  Unfortunately, most characters also have areas where they fall behind others.  Player characters are allowed to choose up to 6 points of Advantages.  However, they must choose at least as many points of Disadvantages.   Obviously, some advantages and disadvantages cannot be chosen together (i.e. choosing Night Vision and Night Blindness would be rather pointless).