SALENA ZITO: Who in America is bowling alone? “Putnam argued that America’s social fabric — that glue of reliance and aspiration that formed communities in this country since Alexis de Tocqueville observed it with awe — had frayed significantly. . . . However, Putnam wasn’t 100% right, either. In places such as Somerset, in a region still shrinking in population because of the loss of industry, residents are feeling less stuck than they were five years ago. This is a bit of a reversal from the earlier sentiments that they needed to leave in order to be successful. Now, they look more favorably on the idea of staying and building a community.”