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.