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.