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.