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.