The computer also has certain attributes which in special situa­tions makes it superior to the teacher. First, the computer has infi­nite patience. Second, through time sharing, it can simultaneously drill a large number of students, each one proceeding at his or her own speed. Third, the computer, if correctly programmed, does not make any mistakes. And finally, there are distinct advantages in the completely ітрегзодаї relation between the student and computer. The student can make all his mistakes in private without having to demonstrate his ignorance to the teacher and to the rest of the class.

All those advantages have to be acknowledged.