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.