The Peter principle.

This book caused a storm when first published in 1969, battering up the bestseller list to #1, charming readers from Topeka to Timbuktu, and finally, brilliantly, blessedly giving the world an answer to a question that nags us all: Why is incompetence so maddeningly rampant and so vexingly triumphant? The book and the phrase it defined are now considered comedic-yet-classic cornerstones of organizational thought, and in honor of the book's fortieth anniversary, Robert I. Sutton has written a foreword introducing the book to a new generation of readers.
The Peter Principle, the eponymous law Laurence Peter coined, explains that "in a hierarchy, every employee tends to rise to his level of incompetence." Everyone from the office intern to the CEO, from the low-level civil servant to a nation's president will inevitably rise to his or her level of incompetence, if it hasn't happened already. Dr. Peter's glorious revelation explains why incompetence is at the root of everything we endeavor to do why schools bestow ignorance, why governments condone anarchy, why courts dispense injustice, why prosperity causes unhappiness, and why utopian plans never generate utopias.
With the wit of James Thurber or Mark Twain, the psychological and anthropological acuity of Sigmund Freud or Margaret Mead, and the theoretical impact of Isaac Newton or Copernicus, Dr. Laurence Peter and Raymond Hull's brilliant book explains how incompetence and its accompanying symptoms, syndromes, and remedies define the world and the work we do in it.