Because of the character of calculability which money has there has come into the relationships of the elements of life a precision and a degree of certainty in the definition of the equalities and inequalities and an unambiguousness in agreements and arrangements, just as externally this precision has been brought about through the general diffusion of pocket watches. It is, however, the conditions of the metropolis which are cause as well as effect for this essential characteristic. The relationships and concerns of the typical metropolitan resident are so manifold and complex that, especially as a result of the agglomeration of so many persons with such differentiated interests, their relationships and activities intertwine with one another into a many-membered organism. In view of this fact, the lack of the most exact punctuality in promises and performances would cause the whole to break down into an inextricable chaos. If all the watches in Berlin suddenly went wrong in different ways even only as much as an hour, its entire economic and commercial life would be derailed for some time.

Georg Simmel, on individuality and social…, loc. 751