TOP economist Jim O'Neill says he is detecting more positivity in the economy, and that businesses should stop "obsessing" over the euro zone.The crisis afflicting Europe, he said was "the most unnecessary" he had seen in more than 30 years in finance because it could have been averted if the euro zone countries had "acted as one unit" rather than allowing political factors to dominate.From a domestic situation, the respected Manchester-born Mr O'Neill said there is a disconnect between official statistics and the real world."Ther......for the full story register now for free or login below...