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.