philosophy Based on David Hume’s point of view, Summarises the 1) Reasons favour and against the claim by George Soros’ focus on wrong doubt and 2) Reasons favour and against the claim by Soros’ Back Pain Stocks Futures and Options Issue: July, 2003 George Soros: How He Knows What He Knows: Part l: The Belief in Fallibility (First in a Four-Part Exclusive Series) by: Flavia Cymbalista, Ph.D., with Desrnond MacRae To many who worship at the alter of the icons of Wall Street, billionaire George Soros, now a philanthropist of note, is considered the 20th century's greatest trader. His lifetime record as a speculator, who made massive wagers on market direction at numerous opportune times, is unparalleled - even if he inevitably did make some expensive mistakes along the way. Anyone who had invested $1,000 in his Quantum Fund when it jumped out of the box in 1969 would have realized a cumulative 30-plus-percent annual return - or about $4 million - by the turn of the new century. How did he achieve his incredible performance? He hirnself attributes his success to a combination of theory and instinct.