Productivity is average output per worker per unit of time. High productivity cannot be achieved without adequate training of workers. So high productivity does not depend on having high-tech equipment. The reasoning in the argument is most vulnerable to criticism on the grounds that the argument ['ignores the possibility that having high-tech equipment is required for adequate training of workers', 'overlooks the fact that increases in productivity may not be desirable in some circumstances', 'confuses a stated requirement for having high- tech equipment with a sufficient condition for having high-tech equipment', 'presumes without giving justification that educating workers always results in an increase in their productivity']