M*A*S*H offered real characters and everybody identified with them because...
The pursuit of happiness is in our Constitution. We're all entitled to have...
So much of life is luck. One day you make a right turn and get hit by a car....
Any kind of anthemic song for the most part they're on the positive side of things. It's not hard to identify when a melody is just one degree too complicated or one degree too simple and where that line of pop memorability lies.
