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.