Practice drawing careful, evidence-based inferences from an incomplete ancient primary source, without overstating what the fragment actually proves.
Much of what survives from the ancient world is not a complete document but a fragment -- a torn papyrus, a broken tablet, a few damaged lines of a longer poem. Historians and literature scholars have to draw conclusions from incomplete evidence constantly, which means learning exactly how much a fragment can honestly support, and where inference has to stop and honest uncertainty has to begin.
The Greek poet Sappho, who lived roughly 2,600 years ago, wrote lyric poetry so admired in the ancient world that later writers called her simply "the Poetess" -- yet almost none of her work survives complete. One of her most famous surviving fragments reads, in translation: "The moon has set, and the Pleiades; it is midnight, the time is going by, and I recline alone." That is the entire fragment -- there is no more of the poem left.
Mastery looks like: They can separate what a fragment directly states from a reasonable inference, and can identify an overstated claim the fragment cannot actually support.
Common stumbles: Treating a reasonable guess about a fragment as though it were a proven fact, rather than clearly labeling it as an inference.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.