At a public lecture organised by SMU, Nobel Laureate Professor Thomas Sargent said that while the QE3, launched by the Federal Reserve, might trigger the risk of an economic bubble, it would not necessarily be a bad thing as this could push US property prices upwards and relieve the pressure on mortgages. Prof Sargent specialises in the fields of macroeconomics, monetary economics and time series econometrics, and his research has been instrumental in addressing recent economic crises. He also commented that while many macroeconomists tried to find a predictable and logical model covering all possibilities, it was hard for them to achieve meaningful results due to the complexity of human behaviour.