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.