Graphic Representation of Production Possibility
The curve that a Production Possibility Frontier has will show you the decreasing yield. As you move along the frontier, the variable curve will show that the interchange of a specific production depends on the initial point. If you are at the top of the curve, which is where you will be assigning all your resources to, you will be able to, by transferring some of your resources, produce more of a certain good with the cost of only a few of another good. If you were to start at the middle of the curve, where you will already be producing a good amount of a good, you will need to sacrifice another good in order to obtain more of the previous.
In economic terminology, the variable curve of the Production Possibility Curve in face of the decreasing yield is due to that the costs of opportunity of the production vary depending on their actual assignation of the available resources. If you are already for example producing a great amount of oranges, the opportunities of cost of dedicating even more work to increase the production of oranges are very high because you will need to sacrifice a great quantity of the production potential of another fruit such as pears. On the other hand, the costs of opportunity of dedicating more work to the production of pears are very low because you need to sacrifice the production of only a few oranges. Obviously you should dedicate the amount of work to recollecting the fruit that has the lowest cost of opportunity.
The Production Possibility Curve is also very practical because the points that are over the PPC clearly show the combinations of products that you will be obtain when it is efficient from the production point of view, in other words you are not going to be wasting any of your resources. In certain points, you will not be able to increase the production of a fruit without reducing the production of another fruit.
