Who is The Lecturer in Recent Runes from The Last Continent: A Discworld Novel and what is their importance?

The Lecturer, in Recent Runes, is one of the faculty members of Unseen University (UU) who in their search for colleague Rincewind enter a tropical island thousands of years in the past and make their way to the last continent, Fourecks. The Lecturer in Recent Runes makes the suggestion that they interrogate Rincewind, who probably knows more about the ailing Librarian than anyone. Still a smirking fellow disliked by his colleagues, the Lecturer recalls from his student days when Old "Bogeyboy" Swallett took them on an expedition to find the Lost Reading Room. They had to eat their boots to survive. The Lecturer denies that there is any mystery about fossils. On Mono Island the Lecturer passes time by reading. His book, Principles of Thaumic Propagation transforms into The Omega Conspiracy.