What does Margie’s diary tell us about the future, as it is imagined in this story?

Margie and Tommy live in a world governed by the use of technology. Books are no longer printed on paper. School lessons are taught by a mechanical teacher—a robot—who personalizes the lessons to each student's level. Children enter their homework and tests in a punch code to be submitted into the robot's slot. All of this technology is a fact of life in Tommy and Margie's world. Ostensibly these innovations were made in the pursuit of progress. But what progress has really been achieved? Is Margie's life any better for the use of all this technology? Margie's dislike of her education, and her longing for low-tech schools of the past, suggest a critique of the pursuit of scientific advancement without consideration of social and communal life. Technology has made Margie's life lonelier, not better.