In this exciting work, Link and Scott summarize more than a decade of their research on public support of R&D in small, entrepreneurial firms, concluding public R&D investments, primarily funded by the U.S. Small Business Innovation Research (SBIR) program, are indeed bending the arc of innovation. Firms that receive SBIR project funding would not undertake the projects in the absence of SBIR's support. SBIR support has had a positive impact on the...