Being and Time mentioned in "Being and Time", has been identified by some with Heidegger's central notion of "Sorge" ("cura", care or concern). However, for Heidegger, "theoretical" knowledge represents only one kind of intentional behaviour, and he asserts that it is grounded in more fundamental modes of behaviour and forms of practical engagement with the surrounding world. Whereas a theoretical understanding of things grasps them according to "presence," for example, this may conceal that our first experience of a being may be in terms of its being "ready-to-hand." Thus, for instance, when someone reaches for a tool such as a hammer, their understanding
Mario Costa (philosopher) the category of "flux", which his analysis considers both from a philosophical point of view and in its diverse aesthetic manifestations. Costa extended his reflection from the "cinematographic flux" to the present "technological aesthetic fluxes", made possible by the advent of digital technology and networks. He concluded that technological fluxes may also highlight essential aspects of contemporary ontology, being closely tied to our experience of time and existential attitude. Mario Costa (philosopher) Mario Costa (born 7 December 1936 in Torre del Greco) is an Italian philosopher. He is known for his studies of the consequences of new technology in art