Articulating the ineffable. Programming language theory 
cognitive psychology. PhD @Stanford
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Hmm I think I agree with this sentiment... To me, Learnable Programming communicates some key tasks/goals (esp. "follow the flow", "see the state") that resonate w/ my experience and provide guidance on what viz to use, curious what you think of those http://worrydream.com/LearnableProgramming/ …
I see Learnable Programming as high-level design principles for program understanding/authoring tools, in the same vein as the cognitive dimensions of notation. They're a useful lens, but sometimes hard to evaluate, or know if you've applied them correctly.
For example, instead of Processing, imagine a Rails dev making a CRUD website. I have an asset pipeline, a database, so on. How do I visualize a database? A transaction? A server connection? A thread pool?
Now I've come up with a proper visualization for all those things. How do I package the vis with the data types? How does my IDE access the vis? How does it know which vis to render, and at what granularity? How does it have access to my runtime state?
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