In Four By Three magazine, Mihnea Chiujdea on Dasein's purposefulness
To highlight the defining relation between Dasein and the tools that surround it, Heidegger introduced another neologism: 'being-in'. This does not refer to a spatial relation - in the way the water can be in the glass – but captures the idea that we deal with the world from inside a network of reference, which is set up by the way equipment refers to one another. The structure, in which things get significance is explained in terms of tools, their function, the product of using tools, and the environment where tasks are pursued. To exemplify, a hammer as tool refers to banging nails into wood, in order to build a bookshelf. All these actions and beings have meaning within the environment provided by the carpenter’s workshop. The final element in this chain is the for-the-sake-of-which. This is the final purpose of an activity, for example completing the bookshelf. As the purpose of a task, it can be actualised and then disappear, before being replaced by another such aim.