(This article was originally published at Statistical Modeling, Causal Inference, and Social Science, and syndicated at StatsBlogs.)

So, I’m at MIT, twenty minutes into my talk on tradeoffs in information graphics to the computer scientists, when the power goes out. They had some dim backup lighting so we weren’t all sitting there in the dark, but the projector wasn’t working. So I took questions for the remaining 40 minutes. It went well, perhaps better than the actual talk would’ve gone, even though they didn’t get to see most of my slides.

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