This book has been the main reference for World Leaders,War Lords,Stock Market Gurus,and Sorabjis who wish to gain the upper hand.I use it all the time,[its far better than a Harry Potter magic wand]
p.p.s.for me,this book is the Holy Grail of all the books in the world,with it you can overcome ANY problem,[i.r.s./ divorce settlements /mothers in law/evil bosses/re.po men/or any long term pain in the ass.It is a study of 400 years of constant war between the war lords of China to gain overall dominance.