Ch.7 and Ch.8

In“Death and life of great American cities”, was divided into 4 parts. The title of part two is the conditions for city diversity. In character 7, Jane Jacob introduces her point of view in city diversity and she explains the function of it. In chapter 8, she points out the economic effect of the mixture uses. It is the first necessary conditions for the diversity city, which she mentioned.
The mixture of uses is essential for city. It is because greater diversity makes greater self-sufficiency. Then, more products are going to be produced. That means places should be used in many way. It can distribute people in different places at all time. This attracts visitor to come and city income increases. When a place is diversely used, people can save money and there are no useless places. Useless places waste money. Therefore, the mixture of primary use is important and it is the one of required condition for a diversity city.