I find it hard to evaluate this program and agree that the demo is extremely limited. As a thinking tool, I find Inspiration and Nova Mind (I own both) to be far superior to the demo of this program. However i like the graphical manner of the software, that operates much like pencil and paper. However i was unable to make useful diagrams in the demo. I think the author might consider another form of protection for his software. My score is based on the demo tho I suspect the program is potentially a 4 or 5 star performer.