For example, auction house Sotheby's only began work on its new office space in Hong Kong last year after a feng shui master chose an auspicious date.

CNN: Asia mixes making money with ancient beliefs

The two models for master-planned communities both date back to the 1960s: Irvine, in southern California, and Sun City, outside Phoenix.

ECONOMIST: The growth of private communities

The quiz master would then pounce, asking for a date and who it's by.

ECONOMIST: London's National Gallery

"You can have a master copy of PC Cillin that makes sure all your copies are up to date just by clicking on one, " says Mr Craig from Trend Micro.

BBC: NEWS | Technology | Home PC face security onslaught

The Oz Master Fund posted a 0.69% return in April and a year-to-date return of 4.08%, according to the SEC filing Och-Ziff Capital Management made on Tuesday.

FORBES: Och-Ziff's Big Hedge Funds Keep Attracting Cash And Posting Small Gains

Titian scholars agree that this is the master's work, but Christie's is nervous of its unfinished state, its sitters and its date.

ECONOMIST: Portrait of a lady and her daughter