As Professor Chiu Shean-bii of the Department of Finance at NTU's College of Management explains, the original meaning of "speculate" is "guess." Whether it be interest rates, exchange rates, share prices or the prices of any of the internationally traded bulk commodities, there is usually some difference between their current level and the level they "should" be at.
台大財務金融研究所教授邱顯比指出，「投機」的英文原意是「猜測」，不管利率、匯率、股價還是國際上的各種大宗原料物資，在目前的價格水準和它「應有」的水準間，往往都存在著落差。