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.