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.