Scribes and authorship of the text

[Jorge_Stolfi]

Bowern found that spaces tend to get smaller toward the right margin of the page, consistent with a scribe seeking to cram more text into a given line.

Great analysis!

The puzzling bit is why there is a slight increase from the first graph point to the second, while the following ones decrease just as expected.  

It could be an artifact of how word spaces are identified by transcribers, and how the dubious space (",") are treated in the analysis.  When the first glyph of the line is y or o, it is often followed by a slightly wider space that some transcribers mark with period, comma, or nothing, often based on subjective criteria that seem to be different from those used when a word-initial o or y appears in the middle of a line.  Could this inconsistency be the cause of that anomaly near the left edge?

All the best, --jorge