Assumptions baked into the VMS carbon dating

[oshfdk]

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I think the data strongly suggests roughly simultaneous creation of the parchment. I've overlaid all 4 images of distinct pages. I've colored with yellow the overlapping range of the actual measurement made (on the Y axis), these actual measurements look very consistent with measuring the same sample material, the overlap is huge. The yellow area is where all 4 measurements perfectly agree regarding the carbon isotope prevalence. The measurement of "years" is a result of plotting these Y-axis measurements against the double-peaked calibration curve, the resulting funky probabilities are much more likely an artifact of the calibration curves than a genuine difference in the measured values.