1.1. In 2008, Jean Nouvel won the Pritzker Architecture Prize (the highest prize in architecture). One ofhis most notable works is the Torre Agbar (pictured), a breakthrough skyscraper that lights up each night thanks to more than 4,000 LED devices-a pricey but purely cosmetic feature.

a. Many people enjoy looking at the Torre Agbar. Just considering that enjoyment, how would you classifY the Torre Agbar: rival or nonrival? Why?

b. The Torre Agbar is the third tallest building in Barcelona. For the purposes of enjoying its illuminated fa<;:ade, would you classifY the building as an excludable or nonexcludable good? Why?

c. Based on your answers, is the LED fa<;:ade a public good?

d. Companies often hire architects like Nouvel to create beautiful buildings that are expensive to design, build, and maintain, yet they cannot charge people to look at them.

This chapter offered one possible explana tion for this puzzle. What's the explanation and how does it help justifY the construction of a widely enjoyed building? (Hint: The building is the headquarters for Grupo Ag bar, a company dedicated to the distribution and treatment of water in countries all over the world. For most of you, this is the first time you've heard of this company.)