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.