Explaining a complex idea means helping someone build an accurate mental model. A practical method covering audience goals, minimum accurate models, dependency order, analogies and their limits, cognitive load, and how to verify understanding.
Words sit at different distances from observable things. What Hayakawa model actually says, why abstraction is not the same as vagueness or jargon, and how to choose the level your audience needs.
The cognitive science of clarity, from the curse of knowledge to the Pyramid Principle: what research shows about why communication fails and how...
Signal and noise is a useful editorial metaphor, not a unified theory of communication. Six types of noise, why the same content can be signal for one audience and noise for another, and when repetition is the point.
Clarity is the fit between how you organised an idea and what your audience can reconstruct from it. Five structural principles, the situations where each does not apply, and how to check what was actually received.
Risk vs uncertainty: Risk has known probabilities, uncertainty doesn't. Heuristics are mental shortcuts, biases are systematic errors.
Intelligence solves problems fast; wisdom knows which problems matter. Knowledge is facts; understanding grasps relationships and meaning.