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.