OBVIOUS experts get to the point, give clear and often brief responses. It’s enough to be understood, no more.
Get to the point, and get to the point really fast. Never use 10 words where five will do. Never use jargon (a word that someone hearing it would not understand), speak as if you are speaking to a 10-year-old, and a 10-year-old knows a great deal.
News channels can describe a war in a headline, so you can and I can describe anything in the same time.
(Extract from The Naked Millionaire)