I really like the idea of a way to measure my knowledge and skills. My preference would be for a directed knowledge graph, where nodes list the knowledge and sk

I really like the idea of a way to measure my knowledge and skills. My preference would be for a directed knowledge graph, where nodes list the knowledge and skills fundamental to the nodes they connect to. This way, I could start from the bottom of the graph and place a checkmark on each node that I felt comfortable with. The end result would be an outline of what I needed to learn next to progress. Alternatively, if I were in a rush to learn a specific item, the tree would give me a roadmap for getting there. I'd be interested in a wiki-like interface for building such knowledge graphs, so that they could be built quickly and completely.