Two sons worked for their father on the family's farm. The younger brother had for some years been given more responsibilities and rewards, and one day the older brother asked his father to explain why.
The father said, "First, go to the Kellys' farm and see if they have any chickens for sale. We need to add to our stock."
The brother soon returned with the answer, "Yes they have five chickens they can sell to us."
The father then said, "Good, please ask them the price."
The son returned with the answer, "The chickens are $10 each."
The father said, "Good, now ask if they can deliver the chickens tomorrow."
And the son returned with the answer, "Yes, they can deliver them tomorrow."
The father asked the older brother to wait, and then called to the younger brother in a nearby field, "Go to the Davidsons' farm and see if they have any chickens for sale. We need to add to our stock."