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.