57. It is widely acknowledged that computer and other machines have become an indispensable part of our society， which make our life and work more comfortable and less laborious.
58. At the same time， along with the benefits of such machines， employees must study knowledge involved in such machines so that they are able to control them.
59. No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.
60. In the second place， there seem to be too many people without job and not enough job position.