How Certain Is the Earliest Fragment, Really

For most of the twentieth century, C. H. Roberts's 1935 dating of Rylands P52 to the first half of the second century stood almost unchallenged, repeated in textbook after textbook as settled fact. Paleographic dating works by comparing an undated document's handwriting to other documents whose dates are independently known, usually from datable papyri such as tax receipts or letters, and Roberts was an acknowledged authority on Greek handwriting of the period. But paleography is a comparative art rather than an exact science, and comparative arts can be revisited as the pool of comparison material grows.

In 2005 the scholar Brent Nongbri published a detailed reassessment arguing that the handwriting Roberts compared P52 to is not actually distinctive enough to support such a narrow window, and that honestly stated, the fragment's script is compatible with dates ranging from the late first century all the way into the third. Nongbri's argument did not claim P52 was necessarily late, only that confidence in an early date had outrun what the comparative evidence could bear. The debate remains live rather than resolved, and it has become something of a case study in how much interpretive judgment sits inside a paleographic date that gets repeated, in popular accounts, as a simple settled fact.