From Scientific American: That is the title of a new book by two quantitatively oriented sociologists. The Harvard University Press offering goes beyond the reflexive and often pessimistic assumptions that often imbue discussions about future prospects for U.S. science and technology.  Xu Xie of the University of Michigan and Alexandra A. Killewald of Harvard answer the self-posed query by supplying a decidedly upbeat answer, one derived from a massive crunching of data sets.