Situation and Knowledge
On the epistemological level, this means that for Vesely, the nature of ‘ground’ allows an understanding of ‘spatial structure’; like a hermeneutical key granting access to phenomena of spatiality. Contemporary architecture has been particularly keen on challenging the average views on ground viz. gravity as a basic ground for the displacement of the subject. This is particularly the case of the collaborative architectural enterprise of Peter Eisenman and Jacques Derrida. Although most architecture cannot escape the ‘predicament’ of gravity, there are numerous examples of play with gravity and the 'visual weight' of architectural mass against gravity, starting from the early twentieth-century constructivism. Such architectural play shows an impulse towards the emancipation from gravity as a natural source of situation, and looks forward to expose a more fundamental ground of reference and its problematic nature. Architecture is thus setting a clear challenge on everyday experience as they are structured characteristically in terms of up and down, and according to a horizontal ground. The experiment of the ‘inverted vision’ seems to show exactly that: the touch of ground helps to define the vertical and the relative distances of objects, orientation, and to recognize the physiognomy of the space. Outside these conditions it seems more or less obvious that the 'grounds' for situation escape our grasp. At the same time, architects are conscious that it is precisely the implicit nature of ground as a structure of references that makes the task of its architectural exploration so difficult.
Moreover, according to Vesely, the notion of ‘ground’ can never provide us with an absolute knowledge of the whole, but only with a mediated understanding of spatial structure. This means that the task of uncovering the hidden nature of ground becomes, a fortiori, one of looking for a provisional ground that is beyond gravity as a natural source of spatial reference. The first long-term programme dealing with the consequences of the absence of gravity was developed already in 1973 by the NASA Skylab. Vesely reports how one of the greatest difficulties encountered by the astronauts is the constant loss of orientation that becomes a general difficulty in recognizing previously known situations. Without gravity, an otherwise familiar compartment would be unrecognizable if not seen from a particular angle. The Sky Lab experience seems to illustrate quite well how the phenomenon of spatial structure and situation comes to be known through a sequence of approximations. Without the right orientation, simple recognition such as finding objects in their right places would become an almost impossible task. Once found the right orientation towards objects, however, the entire spatial frame of the compartment was recognized and so would all objects in their right places and relative positions. In a situation without light or gravity, one of the Sky Lab astronauts also described how a single touch on one of the walls of the space compartment would be sufficient to enact the knowledge of the relative position of the body with respect to all objects (pp. 52-54). This seems to be particularly relevant to show how a particular point of visual or tactile reference can provide with orientation; a physiognomic recognition of the space; and be related to the spatial disposition of the whole. These are instances that, according to Vesely, constitute a continuity of spatial reference and an epistemological, provisional ground. As it arises in the continuity of understanding the potential structure of the space, the notion of ground seems to be of a projective nature (p. 103).
Read more about this topic: Dalibor Vesely
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