I HAVE grave doubts about the justifications given for increased usage of Kai Tak Airport. The Government has estimated its initiative will bring HK$4.5 billion into the local economy annually, because of the increase in the number of travellers. However, the question is who will benefit? How about the 38,000 residents affected by the increase in the number of flights? Has anyone considered the cost of paying for treatment for hearing deficiencies which these 38,000 people will suffer from or lost time due to a decline in work efficiency? Hong Kong is already overcrowded, with serious housing and transportation problems. Additional visitors will increase the workload of the Immigration Department. They will lead to even more traffic congestion, and this will affect productivity as more people are late for work. The right of residents to enjoy some quieter moments in their lives will be taken away. Is risking the health of 38,000 people worth an extra $4.5 billion?