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.