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.