You take 1000 economists and ask them for opinions on a certain problems, you will get hundreds if not thousand different solutions. If you do math say a million mathematicians/physicists, you will almost always get a few if not 1 solution to the problem. By the way, Nobel for economics isnt even part of original Nobel. It basically force fed into it and tag with Nobel label. Economics is essentially just common sense applicable at the specific time...at other times it will fail.