From Davos to... what, exactly?

The world economy
Semi-rational exuberance
The world economy is improving. But not as much as some investors seem to think
A VIRUS is spreading through financial markets—and it isn’t the flu. Investors around the world have been struck by a bout of optimism. As stockmarkets from New York to Tokyo hit multi-year highs, the VIX, a gauge of investors’ fear, fell to its lowest since 2007.