The article discusses the population density in two contrasting neighborhoods in Brazil: Itaim Bibi in São Paulo and Complexo da Maré in Rio de Janeiro. Itaim Bibi is characterized by vertical development with many high-rise buildings, while Complexo da Maré consists mainly of houses and low-rise structures. Surprisingly, the population density in Maré is approximately 290 inhabitants per hectare, which is nearly three times that of Itaim Bibi, which has around 100 inhabitants per hectare. This striking contrast challenges common assumptions that taller buildings correlate with higher populations.

The article further elaborates on this phenomenon by comparing other global cities. For instance, it cites Barcelona's Eixample, which has a significantly higher population density than Itaim Bibi, despite its buildings being only six stories tall. It also mentions Manhattan, New York, noted for its skyscrapers, which has a population density slightly lower than that of Maré, at 272 inhabitants per hectare. This data prompts the reader to reflect on how urban design and construction styles affect population density.

Ultimately, the findings suggest that physical appearance and the verticality of buildings alone do not determine population density. Other factors, such as the layout of housing and urban planning policies, play crucial roles. This insight offers a new perspective on urban development in Brazil and potentially in other cities worldwide, urging a reconsideration of how cities are structured and how density is understood across different contexts.