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.