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.