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.