A comparison and contrast paragraph or essay can be organized by either a block method or a slice method. What method is used in the following paragraph? Boston and Detroit are completely different cities. One difference is that Boston is small in that its mero area has about 1 million people, while Detroit is large with its metro area having about 4 million people. Another difference is that Boston is old with its history dating back to the colonial period, whereas Detroit is young and mostly a twentieth century city. Their third difference lies in culture. Boston has a quaint and sophisticated culture well-known for ballet, symphony, and museums; in contrast, Detroit boasts a raw and urban culture known for Motown music.