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.