Limits of Conversational Structure (
http://www.youtube.com/watch?v=pxS5wUljfjE , short link: http://sl5.de/x2035) Comparison is better then a rating scale http://debategraph.org/comparisonBetterThenRatingScale
152 Gestalt - Gesetze - YouTube (
http://www.youtube.com/watch?v=ZWoU2SYVcWI&feature=autoplay&list=WL22EA36860F9380EB&lf=BFp&playnext=6 , short link: http://sl5.de/152Gf)
Kanal von Debategraph - YouTube (09.10.2011,
http://www.youtube.com/user/Debategraph , short link: http://sl5.de/Kanam)