Research notes on "modeling natural science". Topics/phrases: - system identification and parameter estimation - computable notation - cybernetics - epistemology - computer algebra systems - symbolic regression - learning by teaching the computer - infrastructure and augmentation for reearch communities Don't think I want to build or study tools for their own sake; want to improve the state of human knowledge about natural systems, by all of: contributing new models; validating and improving existing models; spreading understanding and value of knowledge to society. If collaborative tools aren't an effective mechanism i'll try others.