The author's use of "sufficient cause" brought to mind Sciral's Flying logic[0] which does some basic logic and sufficient cause in terms of Goldratt's Theory o

The author's use of "sufficient cause" brought to mind Sciral's Flying logic[0] which does some basic logic and sufficient cause in terms of Goldratt's Theory of Constraints. It's also useful for a number of other logical structures, like trees. [0] http://flyinglogic.com http://flyinglogic.com