【明報專訊】FORMER Hong Kong Monetary Authority (HKMA) chief executive Joseph Yam Chi-kwong has published an academic paper urging the government to take into consideration the public interest and revise the dollar peg by, for instance, widening or removing the trading band. His suggestions have attracted widespread attention, and the exchange rate of the Hong Kong dollar fluctuated wildly for a while. The market's response to Yam's suggestions is telling Yam clearly that he has acted most inappropriately.