The intellectual breakthrough contributed by the new growth theory was the recognition that investments in knowledge … and human capital endogenously generate economic growth through the spillover of knowledge. Endogenous growth theory does … not explain how or why spillovers occur. The missing link is the mechanism converting knowledge into economically relevant …

endogenous share opts for innovation and faces credit constraints in the subsequent expansion phase. We emphasize four results …: (i) R&D subsidies not only encourage innovation but also relax finance constraints and help innovative firms to exploit … investment of constrained firms by reducing free cash-flow and thereby discourage innovation. (iii) A revenue neutral increase in …

regard to the capital gains tax, innovation subsidy, public R&D spending and other policy initiatives. …