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.