‘Informal Practices’ will be the central theme of Jaap Klaarenbeek’s lecture on the 18th. Various instances of informality will be showed, the ‘magnitude’ of informality in São Paulo and the way it effects the city’s urban life and space. During the lecture several types and modes of informality will be distinghuished, as well as the way in which these practices emerged in São Paulo’s urban landscape, and the forms in which they use the urban space. In his lecture Jaap will shed a light on the tensions between formal and informal and the complex typologies they produce, as well as the symmetries and asymmetries between formal and informal ‘worlds’ in São Paulo. Jaap Klaarenbeek is graduating on an investigation on the topic of informality in São Paulo.