Conceptual Science 
Conceptual Science Links
| The Logic Alphabet Project | The task of constructing the Logic Alphabet is part of a longstanding project initated by Zellweger. This project comes under the general area now called "sign factors engineering." It could also be called "cognitive ergonomics." |
| Aust Think.org | Austhink is a critical thinking research, training and consulting group specializing in complex reasoning and argumentation. |
| Steve Palmquist's web site | Articles on the Geometry of Logic |
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Conceptual Science