Engineers speak half–jokingly about Murphy's Law: " If anything can go wrong, it will." But complexity stands under a second law as well. Let me call it Drucker's law: "If one thing goes wrong, everything else will, and at the same time."

— Peter Drucker MANAGEMENT: Tasks, Responsibilities, Practices (1973)

More quotes by Peter Drucker

MANAGEMENT: Tasks, Responsibilities, Practices (1973)

The Practice of Management (1954)

MANAGEMENT: Tasks, Responsibilities, Practices (1973)

MANAGEMENT: Tasks, Responsibilities, Practices (1973)

The Future of Industrial Man (1942)

Quote text and notes from Wikiquote: Peter Drucker (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.