The Domain of Information Theory in Biology 195 



For some reason, our time has been (and still is) exceedingly fertile in producing 

 theories dealing with systems, or in reviving and greatly expanding existing 

 theories of systems. Information theory is one of several system theories — 

 a very rewarding one, I believe, but one with very specific limitations; it should 

 be useful to search specifically for theories with different limitations to supple- 

 ment information theory. 



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