I just found this wierd observation in Ragestache Comics. Anybody care to explain to me why one can Retain the troll face even after sometime ?? (Eg. I could Retain the figure in my mind for more than 4.5 mins ).http://cdn.ragestache.com/2012/1/23/ragestache.com_30398_1329012006.jpg [Broken] BTW, could this idea be used to memorise things better ??