It Is Generally Agreed That "Hello" Is An Appropriate Greeting Because If You Entered A Room And Said "Goodbye," It Could Confuse A Lot Of People.

HomeFortune CookiesMiscellaneous Collections

It is generally agreed that "Hello" is an appropriate greeting because
if you entered a room and said "Goodbye," it could confuse a lot of
people.
-- Dolph Sharp, "I'm O.K., You're Not So Hot"

Related: