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.