From qualities to modalities
Flexibility of interior space in school buildings became a priority in the period immediately after the Second World War. Spatial continuity describes a space with freely communicating areas, without boundaries – transparent or movable – to block the flow of physical movement and spatial experience. Herman Hertzberger was concerned with the breadth of form upon which the interaction of form and user depended, the experience and appropriation of form. Today, the term 'fluidity' or 'liquidity' is often used in conjunction with that of 'interactivity', which denotes the capacity of the material of the architectural project to change, to be transformed, acting as a new interface with the user depending on his needs and expectations. Fluidity succeeds signs, their permanent or controlled multiplicity, making the body and its desires a factor regulating its place of residence. The preplanned and predetermined are replaced by multiplicity, the capacity for constantly eliciting new and unforeseen uses and interpretations of form.