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.