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.