Drawing a Hypothesis - Figures of Though - by Nikolaus Gansterer:
http://www.gansterer.org/img/projekte/drawing-a-hypothesis_webselect/Drawing-a-Hypothesis_Figures-of-Thought_Nikolaus-Gansterer_c-2011_sample-pages.pdf #Book
Drawing a Hypothesis - Figures of Though - by Nikolaus Gansterer:
http://www.gansterer.org/img/projekte/drawing-a-hypothesis_webselect/Drawing-a-Hypothesis_Figures-of-Thought_Nikolaus-Gansterer_c-2011_sample-pages.pdf #Book