Sidewalks critical to the health of a community

I have been meaning to write a several-post series using many of the tenets contained in The Death and Life of Great American Cities as a basis while relating those tenets to issues we face today, but this opinion could be a start. Jane Jacobs starts Death and Life with a several-chapter discussion of the importance of sidewalks. Fifty years later, sidewalks remain extremely important. Without sidewalks, there is no walkability.