Articulating the ineffable. Programming language theory 
cognitive psychology. PhD @Stanford
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The iterrows is a bit of an exaggeration. These days, it's usually -- I can't figure out a simple thing with a multi-index, so I do a complicated thing with a flat table. In the outlier example, I couldn't figure out broadcasting semantics between tables of different sizes.
Come to think of it, 99% of my ongoing confusion usually arises from hierarchy and groups. Everything else is relatively easy (given past experience w/ SQL and functional list APIs).
ah, this I can relate to, because that stuff confuses me even after looking at the examples and the docs for a long time. the behavior just doesn't seem to fit into my mental model at all.
I think there would be massive value in automatic contextualization of a tutorial. The pandas multi-index doc is hard to parse because it's full of "foo/bar/baz/quux" random data. But if the data were familiar to me, maybe that would be easier?
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