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.