In the context of a Hecksher-Olin model, fixed factor prices will lead to the long-run version of this being piecewise linear, and equal to the Rybszynski line. Heavy dominance of economies of scale can lead to a convex one of these, and similar inputs can lead to a linear one of these, but it is normally concave due to opportunity costs, and output bundles are allocatively efficient when they are on this line. Its most stereotypical presentation involves two goods which are chosen as metaphors for national security and domestic goods. Guns and butter are often used to illustrate, for 10 points, this basic economics curve which shows the limits of efficient production for various combination
In the context of a Hecksher-Olin model, fixed factor prices will lead to the long-run version of this being piecewise linear, and equal to the Rybszynski line. Heavy dominance of economies of scale can lead to a convex one of these, and similar inputs can lead to a linear one of these, but it is normally concave due to opportunity costs, and output bundles are allocatively efficient when they are on this line. Its most stereotypical presentation involves two goods which are chosen as metaphors for national security and domestic goods. Guns and butter are often used to illustrate, for 10 points, this basic economics curve which shows the limits of efficient production for various combinations of two goods.
In the context of a Hecksher-Olin model, fixed factor prices will lead to the long-run version of this being piecewise linear, and equal to the Rybszynski line.
 production possibility frontier [accept production possibility curve]