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Fair enough. That is an entirely valid critique. However, I do not think this makes the article worthless. Given the apparent correlation between known expressiveness and the data derived here, it may be that they had a good notion using length-of-commit as a measure for expressiveness.

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> it may be that they had a good notion using length-of-commit as a measure for expressiveness.

Replace "expressiveness" with "author's anticipation of reviewer difficulty based on prevailing cultural biases" and you have a different conclusion for how authors size groups of changes that also matches the order graphed.

If you want literal expression-per-line why not just look at compressed_size/line_count for the available body of work in each language?

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