Even trivial ephemeral records from a long time ago are incredibly useful to historians for what they give away about the time - tools, politics, morality; all

Even trivial ephemeral records from a long time ago are incredibly useful to historians for what they give away about the time - tools, politics, morality; all are encoded inadvertently in the simplest text on any subject. The Rosetta Stone for example is an incredibly boring text about taxes on religious organisations, but it proved to be rather useful.