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.