One day, the country is on the brink of a double-dip recession; the next, it is on the verge of a turbo-charged recovery, powered by resilient consumers and US multinationals starting to deploy, at long last, their massive cash reserves. In the process, markets take investors on a wild rollercoaster ride, with the European crisis (riddled with even more confusion and volatility) serving to aggravate their queasiness.