According to the Damon Krukowski says that “the marginal-the rejected-the repressed-is whatever the powerful have decided is of no use at the moment.” It means something that is not recognized by the public. First, he narrates the difference between the strong and the marginalized through the release of Music by Michael Jackson and Sting. Although two people have different because of the type, the way they publish is the same, people can listen to them at the same time. But in fact this social recommendation is not enough for music. Then they developed an acoustic technique to make the music sound more distinctive. They use cultural recommendations to get people to understand music in terms of what they think of music. The music is polished to great effect. He then goes on to illustrate how developers can reach out to the masses without being marginalized by describing the marketing strategies of Google, Facebook, Amazon, and apple. In addition, we are all trying not to be “the marginal” by society. But while we are adapting to the development of society, we also need to consider whether we have lost ourselves. I think those who are often ignored by us are the most real self.