Congratulations Elinor Ostrom! She shares the prize with Oliver Williamson. I am delighted to see the work that Elinor does be recognized  because understanding commons problems and institutions is an overlooked and extremely important part of economics from the standpoint of non-economists. Williamson, by all accounts, is a deserving winner as well. My prediction was off (Nordhaus) but I suspect given what was recognized that he was considered.