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.