What Is Missing From Our Knowledge of Old Age?

Professor Timparkin talks to mat smith about old age in the roman empire. What do you think is missing, and what could be added to this kind of knowledge? The biggest gat we have are the 99 point nine % of the population who weren't senators or a christian family. And once you start looking the medical evidence, tho legal evidence, for example, provides much more information than i think we've realized before.