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 ...

No matter how complex, the underlying basis of almost every economic theory is that markets search for prices that create a balance between supply and demand. Consequently, when all participants act ...

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 ...