And if you thought that was neat. http://spectrum.ieee.org/automaton/robotics/artificial-intelligence/whoa-qua drotors-play-catch-with-inverted-pendulum/ This makes my head hurt. -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.