1) The document discusses debates around modern urban planning approaches championed by Le Corbusier and their critique of traditional urban forms. 2) Le Corbusier advocated for straight, efficient street grids and separating functions into high-rise towers with green space in between, while critics argued this ignored how people naturally interacted in cities. 3) Brasilia, built upon Corbusian principles, is presented as a large-scale example of this vision but is critiqued for being inhuman in scale and not adapting to local contexts.