feedback               
                                      
                            
                            
                                          
 feedback is  for  making the  process  a 
 whole  lot  more messy, to  introduce  a 
 fractal  in  the spice mix...  things or 
 populations of  things  start to be self 
        referential or self eating        
 (autovore...) or spiraling in  or out... 
                                          
 in the sixties they  did research in the 
 jungle and  in  the  sea  and they found 
 that feedback  does not  give rise to an 
 equilibrium.  they  were trying to prove 
 that nature is a tame beast.  but  she's 
                   not!                   
 this  may  hold  true  out  there... but 
 maybe not in signal wizardry?  depending 
 on  your  technique,  you  might  easily 
            find recurrences.