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.