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.