This questionable tome seems to be summed up with this gem in its last chapter:
most anything will work if you get Above The Line® and use your headBasically, if your efforts are successful you were obviously following the authors principles. If you fail, you fell Below The Dredded Line. In the end they have covered their tails by redefining "GOOD" as "Above The Line" and "BAD" as "Below The Line".
Orwell would be proud.