Before you accept the premise that NFHS proofreaders are simply human beings who sometimes make mistakes, I would like to remind you of the great "Hash Mark" incident of 2010.
Thru the 2009 season, hash marks were placed on the field so that they were bisected by their respective yard lines. In 2010, the NFHS rule book changed that to having the hash marks placed so that they bisect the yard lines. (See 2010 Rules Exam question 7.) Some of us fought the good fight and railed against the injustice. However to no avail.
To recap the problem, if the hash marks were actually placed so that they bisect the yard lines, there would be BY DEFINITION OF THE WORD BISECT, one set of hash marks running down the middle of the field, instead of the familiar two sets of hash marks which divide the field into three parts.
The 2011 rule book reverted to what had been the rule prior to 2010, with not so much as a "we goofed". The rift in the space time continuum was mended and peace was returned to the universe.
It has taken two years of counseling and therapy, but I am finally coming to grips with the unspeakable trauma that it caused.
However, I am not yet willing to accept that NFHS proofreaders are simply humans who sometimes make mistakes. I believe that they (at least the ones around during the 2010 season) are actually space aliens who tried to slip one by. So now we have the great DPI flap of 2013. Coincidence? I don't think so!