Economists typically picture indifference curves as convex to the origin (they bow in, as in Figure 2.1). Convexity implies that if Dom has a relatively large amount of food, he would willingly exchange a relatively large quantity of food for a small amount of additional clothing. Thus, the indifference curves in Figure 2.1 are steep when the level of food is high relative to the level of clothing. In contrast, if he has a relatively large amount of clothing, he would be willing to substitute only a small amount of food for additional clothing. Correspondingly, the indifference curves in Figure 2.1 flatten as Dom has less food and more clothing. The behavior implied by the convexity of indifference curves is consistent with the observed behavior of many individuals—most people purchase balanced combinations of food and clothing.