digraph interests
	{

	// Confused? See http://www.graphviz.org

		math [shape=invtriangle]
		physics [shape=invtriangle]
		computers [shape=invtriangle]
		math -> physics [arrowtail=normal arrowhead=normal]
		computers -> math [arrowtail=normal]
		physics -> computers [arrowtail=normal arrowhead=normal]
		
		computers -> beowulf
		computers -> BSD
		BSD -> OpenBSD -> security
		BSD -> DragonflyBSD -> beowulf
		beowulf -> linux [arrowtail=normal]
		computers -> linux
		computers -> programming -> functional -> xmonad
		programming -> parallel -> beowulf
		linux -> xmonad
		linux -> networking -> beowulf
		computers -> security
		computers -> filesystems -> linux
		computers -> UI -> xmonad
		
		
		physics -> parkour
		physics -> running
		physics -> quantum
		gravity -> space -> physics [arrowtail=normal, arrowhead=none]
		running -> parkour [arrowtail=normal]
		
		graphs -> math [arrowtail=normal, arrowhead=none]
		calculus -> math [arrowtail=normal, arrowhead=none]
		math -> security
	}