Related:

• In any calculation, any error which can creep in will do so. -- The RPCISPE's First Universal Law
• The most vital dimension on any drawing will probably be left off.
  -- The RPCISPE's Fifth Universal Law...
• In any formula, constants (especially those obtained from handbooks) are to be treated as variables.
  -- The RPCISPE's Third Universal Law...
• That device requiring the most service will be least accessable.
  -- The RPCISPE's Fifteenth Universal Law...
• Theory of the International Society of Philosophic Engineering In any calculation, any error which can creep in will.
• Interchangeable parts won't. -- The RPCISPE's Eleventh Universal Law
• Actual service conditions cannot be met in the laboratory. -- The RPCISPE's Fourth Universal Law
• Operation instructions shipped with the unit will be discarded by Receiving.
  -- The RPCISPE's Fourteenth Universal Law...
• Parts that cannot be assembled incorrectly will be. -- The RPCISPE's Tenth Universal Law