The most serious social problem in Korean society in the 20th century was poverty, but inequality became the most serious social problem in the 21st century. I think the reason why inequality started is because of 'income'. This is because income is widening the gap between the rich and the poor. In a capitalist society, people buy the necessary services as goods called 'money'. Of course, the rich can purchase more than they need, and the poor often cannot. I think what is essential for human life can be purchased according to income, and conflicts are arising as there is a difference between no and no. Therefore, various methods are being applied to resolve the conflict, but there seems to be no plausible way yet. Currently, there is a lot of talk about Korea's public housing policy. There is a story that public housing, which is to have one's own home, is meaningless. And people still call people who buy rental houses 'Elsa(a person who lives in LH)'