Related:

• Johnson's First Law: When any mechanical contrivance fails, it will do so at the most inconvenient possible time.
• Murphy's First Law of Construction: Power tools will fail at the most inconvenient time possible.
• It is a mistake to allow any mechanical object to realize you are in a hurry.
  -- Murphy's Thirty-First Law...
• In any calculation, any error which can creep in will do so. -- The RPCISPE's First Universal Law
• If there is a wrong way to do something, most people will do it every time.
  -- Rudin's Law In a crisis that forces a choice to be made among alternative courses of action, people tend to choose the worst possible course....
• Rudin's Law: If there is a wrong way to do something, most people will do it every time.
  Rudin's Second Law: In a crisis that forces a choice to be made among alternative courses of action, people tend to choose the worst possible course....