Two sons work for their father on the family farm.
The younger son has for years been given more responsibility and reward, and one day the older son asks his father to explain why.
The father says, "First, go to the Kelly's and see if they have any geese for sale." The son soon returns with the answer, "Yes they have five geese they can sell us."
The father then says, "Good, please ask them the price." The son returns with the answer, "The geese are $10 each." The father says, "Good, now ask if they can deliver the geese tomorrow." And duly the son returns with the answer, "Yes, they can deliver the geese them tomorrow."
The father now asks the older son to listen while he speaks to the younger son, who he calls over from another field. "Go to the Davidson's Farm and see if they have any geese for sale."
The younger brother soon returns with the answer, "Yes, they have six geese for $10 each, or ten geese for $8 each; and they can deliver them tomorrow. I asked them to deliver the six unless they heard from us in the next hour. And they agreed that if we want the extra four geese we could buy them at $5 each."
Understanding dawns on the older son’s face.