This concluding chapter develops some concepts and mobilises them in a diagram we call the variety-flexibility grid. The grid is helpful in explaining the relationships between the preceding papers and in emphasising their fundamental cohesion. That cohesion lies in their collective documentation of a single large point, namely that there is potentially a wide variety of ways producers might respond to a market demand for variety. Market demand for variety does not necessarily lead to a one-size-fits-all One Best Way (Freyssenet, et al., 1998).