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.