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.