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.