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.