Here is what happened:
"The scientist at one point pushed the unusual idea of using gamma rays to peer into the blowout preventer to determine if its valves were closed, a technique he experimented with in graduate school while studying radioactive decay.
The suggestion at first elicited snickering and "Incredible Hulk" jokes. Then they tried it, and it worked. "They weren't hot on his ideas," a senior White House official said of BP's initial reaction to his suggestions. "Now they are."
Here is part of an interview with him:
"How is it that you know enough about gamma rays and oil spill technology to be helpful? I wasn't aware that that was an area you'd worked in?
Reply: Oil spills were not something I've worked on, but I do know about gamma rays."
http://www.theatlantic.com/science/archive/2010/05/excl... /
The scientist was Dr. Stephen Chu. If he had not been in his current position, I doubt if his idea would have even gotten through the door.
You don't have to have a degree in petroleum engineering or direct experience in drilling to make an important contribution. This is the very problem I have been talking about. Ideas need to be solicited from a variety of places.