Related:

• A professional is someone who tells you something you already knew
  but in the telling, through the use of jargon and jumbo, makes the whole thing sound impressive and confusing, and then charges you a professional fee for doing this to you....
• An authority is a person who can tell you more about something than you really care to know.
• A diplomat is a man who can tell you to go to hell and make the trip sound pleasurable.
  -- Samuel Cleme...
• Generally, an expert is a person who can shower bucketfuls of utter confusion on complete simplicity.
• Patry's Law: If you know something can go wrong, and take due precaution to prevent it, something else will go wrong.
• As you already know, many people find it condescending to be informed that they already know something.
• The more you know, the more confusing everything becomes.