Jacobs starts by explaining the importance and the use of the sidewalk that lacked in the housing policy. The first importance is that the sidewalk can be used for safety. Given that the main roads may have some first moving cars, pedestrians can use the sidewalk which is a small path on the side of the road for their safety. Sidewalk, according to Jacobs can be used for contact and assimilation. Children require to be assimilated to the city order whilst they are young (Jacobs). They will be able to know the rules that govern both the pedestrians and the drivers via observation from the sidewalk.