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.