Researching then and now

How has doing a doctorate changed over the years? Prof Peter Downton reflects: " Someone undertaking a doctorate at the same time as me was locally famous for reading only about six books. They were well-selected and extremely well read. In those times it was less evident that there was far, far too much material to be accessed. Fears of drowning in material, or horror of being unaware of important papers, were lively issues then as well as now. Perhaps I realised early the difficulty of getting to all the material within a lifetime. I became calm about this. If, realistically, I could not deal with everything, then it was useless to fret."