[David]

The National Chicken Farmers Association wanted to help households who wish to raise chickens by designing the optimum chicken coup.

They request designs from an architect, a psychologist, and an engineer.

The three groups present their designs at the NCFA national convention.

The architect presents his design first. He explains how the shape of the chicken house will improve egg laying through proper location of the entry and better location of the nests.

Next up is the psychologist. He explains how his design uses colors to improve the chicken's mood and increase egg production.

Finally the engineer presents his plan. He starts his presentation: "First, I assumed a spherical chicken..."