Studies on the Motion of Viscous Flows — II 



certain universal characteristics that unify them, and by which they in turn 

 unify all natural phenomena. All of the forces in nature are accordingly under- 

 stood to emanate from the universal and irreducible aspects of nature, and to 

 join these directly with immediate experience. By this understanding, all of the 

 forces in nature directly link what is most fundamental in nature with immedi- 

 ate experience. This is an aspect of nature which all forces have in common 

 and through which they bear to each other a correspondence which is universal 

 rather than asymptotic, as is, for example, the correspondence that exists be- 

 tween the classical and nonclassical physical theories invoked by Bohr's prin- 

 ciple of asymptotic correspondence. Since this universal correspondence is an 

 aspect of all of the forces in nature, it refers in particular to the forces which 

 are manifested within the domains of experience that are now conditioned by the 

 classical physical theories, and implies that through these forces the classical 

 and nonclassical physical theories, in fact, bear to each other a much stronger 

 correspondence than is demanded or revealed by Bohr's correspondence prin- 

 ciple. It is through the forces that the classical and nonclassical physical theo- 

 ries, and the phenomena as well as the principles revealed in their respective 

 experimental domains, are brought into complete correspondence. The princi- 

 ple of uncertainty, first identified in the experimental domain of quantum me- 

 chanics, is a case in point. By this concept, all experimental domains, i.e., all 

 aspects of experience, are brought into mutual and total correspondence by 

 forces. This is the experimental aspect of the Principle of Universal Corre- 

 spondence. 



The laws of classical mechanics have been and are still mistakenly con- 

 strued to imply deterministic causal connections between mechanical phenomena. 

 This misconception is largely based on a misunderstanding which claims that 

 these laws define and consequently determine the aspect of nature, which is 

 designated in Newton's propositions by the symbol F. The force designated by 

 this symbol is, in fact, not defined and consequently not determined by the known 

 laws of mechanics; it simply expresses a relation between them. This simple 

 relation between forces, which is invoked by known laws of classical mechanics 

 as a general feature of all bodies and which is defined as equilibrium, also in- 

 cludes inertia forces in cases where equilibrium cannot be maintained statically. 



The nature of the connections through which the ultimate aspects of nature, 

 called here the universals, are joined to immediate experience, is, of course, a 

 most fundamental and open question — a question that concerns the nature of force 

 itself — because all forces in nature, as they are envisaged here, are precisely 

 these connections. By this thinking, what is common to all forces in nature and 

 from which they all derive their causal features and evolutionary thrust — fea- 

 tures which the known laws of classical mechanics do not express —is a con- 

 stantly sustained process of adaptation to the irreducible space-time structures 

 irreversibly impressed by the universals embedded in nature's space-time man- 

 ifold. These immutable and irreducible phenomena which are envisaged here as 

 being endowed with a dynamism by which they internally drive the space -time 

 manifold, by irreversible connections, are called universals because they were 

 conceptually identified by and inferred from the Dimensional Universal Con- 

 stants. The universals are thus conceived as constantly -regenerating immutable 

 space -time structures which are embedded in the space -time manifold, and 



477 



