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.