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.