In 1973 archaeologists digging at Vindolanda– the former site of a Roman fort, about halfway along Hadrian’s Wall in the North of England– uncovered a store of letters and files on wooden tablets. Between about AD 85 and 122 the wall was being built to mark the farthest extent of the Roman empire. Boudicca and the Iceni had kicked off and destroyed several Roman cities only a few decades previously, and the tribal people of Britain were still far from pacified or assimilated, but Hadrian made the strategic decision to physically isolate the Picts who lived in what is now called Scotland because they were even more troublesome. Most of the tablets seem to date from roughly this frontier period. Ironically the documents may have been preserved because they were dumped out periodically with the rubbish, which led to them being buried instead of taken away or lost.

Remarkable as…