Professional Experts
On the subject of the "experts" who are continually trotted out by the likes of CNN and BBC - many of these folks are Professional Experts and they have spent a working lifetime polishing their credentials, rather than actually contributing to their field. They sit on the right committees, they acquire the right letters after their names and as 'talking heads' they sound super-authoritative - they excel in self-promotion. In fact you can find these people in every profession. The real experts, who can give the most insightful answers, are seldom seen - partly because they prefer to be doing real stuff - and maybe also because they are lousy presenters and shun the limelight.