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.