‘All you have to do is look at artefacts, documents, and the like. But how do you research the history of words? How do you determine how far they’ve travelled?’ Professor Lovell looked very pleased by this question. ‘Reading,’ he said. ‘There is no other way around it. You compile all the sources you can get your hands on, and then you sit down to solve puzzles. You look for patterns and irregularities. We know, for instance, that the final Latin m was not pronounced in classical times, because inscriptions at Pompeii are misspelled in a way that leaves the m out. This is how we pin down
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