"Krige and his collaborators have assembled a powerful array of studies that reconfigure conventional narratives about how knowledge flows. Divided among historical case studies related in some way or another to national and economic security, on the one hand, and agricultural exchanges, on the other, the volume avoids the usual binaries of Global North and Global South–or of guns and butter–emphasizing the efforts to block, shape, or redirect the flow of knowledge. The cast of characters and the variety of regions is massively expanded, to excellent effect."–Michael D. Gordin, Princeton University