George Soros (Trades, Portfolio) has a fantastic reputation of being one of the greatest investors. He has attributed his success to a theory he started developing back in the 1950s. This theory ...

Physicists have known for decades that the process of observing and measuring phenomena changes those very phenomena—the so-called “observer effect." It does not even matter whether the “observer” is ...

THE continued outperformance of stock markets around the world, led by Wall Street, has been a source of wonder, and possibly awe among many investors. In the early part of this year, it was easily ...