I've been using this format recently and appreciate the additional fidelity from simple rows. The flexibility makes it good for the raw stage, but I usually hav

I've been using this format recently and appreciate the additional fidelity from simple rows. The flexibility makes it good for the raw stage, but I usually have to extract tidy subsets for real analytic work. I have written many little scripts to pull arbitrarily deep keys out of these structures and produce tidy tables for further analysis. actually, this format is also nice because iterating over the lines of a file is very similar to running through a mongo cursor. that makes it easy to reprise choose to work with both inputs.