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.