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.