The project 4 makes me think more on the aspect of involving the public into the art project. Also, by and by I realize arts are definitely not confined by the space and there are a lot of arts happens in the streets. I find it attractive to me in the street arts because it is easy for people to access so that the messages that the artist hope to deliver will be accessible to most of the passerby. I found this article in which five quite simple but thought-provoking street art project are introduced. Some of them I am familiar with but some other are quite fresh to me.