"It doesn't matter how smart you are, if you can't make good decisions," says author. The hypothesis of intellectual intellectual incapacity leaves two questions quite unanswered", he adds. "How, if they are so lacking intelligence, do people become senior military commanders? Maybe, maybe occasionally?" And what is it about military organizations that they should attract, promote, and ultimately tolerate those whose performance at the highest levels may destroy the organizations that they represent to answer those, these questions? 'I just had to go hard in these first couple chapters to lay down the background, the context,' writes David Perry.