Along with the trend of longevity, nobody could have failed to notice a heated debate on whether it is wise to postpone retirement age. Some people argue that it's necessary to postpone the retirement age in that it is a good way to deal with the aging population.One of the direct results of the aging society is a drop in the labor force supply，which can be relieved by postponing the retirement age.However，other people hold a negative view about it.For one thing，this reform could raise t...