The analysis of equipment is headed A. The Analysis of the Worldliness of the Surrounding World and Worldliness in General; § 15. The Being of Beings Encountered in the Surrounding World. The being of what is first encountered is to be determined. These are the 'things' that the Greeks call πράγματα. Their being consists in "being-good-for...", (something or other) which comprises "serviceability, flexibility, applicability, handiness," (SZ 68) etc. Marx would call this use-value: things are useful in everyday dealings. For his part, Heidegger puts producing in the foreground: "...the work, what is to be produced in a specific situation, is what is primarily taken care of and therefore also what is primarily at hand." (SZ 69f) The relationship to equipment when manipulating, using and producing is always a relationship to a totality of equipment in an referential network of utility. One piece of equipment refers to the next, and so on. What is striking is that Heidegger only talks of producing, of production and not of circulation, although they mutually depend on each other (as Marx expounds at length in the introduction to the Grundrissen). How is circulation to be understood as a mode of being? Above all in relation to a particular piece of equipment, a special being encountered within the world, does something paradoxical become apparent when circulation is blanked out: Money is equipment that does not fit very well into the analysis of equipment. What is the being of money? If it is something at-hand, then its essence must lie in being-good-for.... For what can money be used, what is it good for? To buy things. Money is (good) for buying. Can buying be interpreted as a taking-care-of...? Buying is useful for, e.g. taking care of the supply of food; a supply of food is for meeting daily nutritional requirements. Meeting daily nutritional requirements is for the sake of maintaining Dasein's standard of living on a certain level, that is, for the sake of a possibility of its existence. (Cf. SZ 84) But buying is a very general taking-care-of..., if it remains a taking-care-of... at all, insofar as money is also good for buying to make more money by reselling. Money-making and especially making-more-money are useful for something special which cannot be traced back or tied back to a for-the-sake-of (a possibility of Dasein's existence) easily and perhaps not at all.

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