The text below is meant to be read aloud at the start of the discussion section. It compresses the week's lecture into a few minutes and hands the room to the two tasks. The fuller notes that follow are for setting each task up in turn.
This week's lecture traced one argument through five movements: that Greece's mountains and its sea act as constraints and openings on what people could do, never as a determination of what they did. The Aegean bound its islands together long before agriculture — obsidian was already crossing open water from Melos by around 11,000 BCE — and by the fourth millennium the islanders of Andros were carving dozens of boats into the bedrock at Strophilas. That connectivity was earned, not given: Hesiod trusted the sea for only fifty days a year, and every voyage before the compass was steered by memorised stars, not instruments.
Around 2200 BCE two very different landscapes changed course together. The Cycladic ritual centre at Keros fell silent and its figurine tradition ended; on the mainland, the House of the Tiles at Lerna burned and was never rebuilt. Both have been blamed on a single climatic "mega-drought" — a reading the Greek evidence itself resists: two Peloponnesian caves seventy kilometres apart disagree about whether a drought happened there at all. The lesson the lecture drew from that disagreement carries into this week's discussion: not whether climate caused an outcome, but what range of responses a changing climate left open, and which a given community took. Crete's first palaces, emerging around 1900 BCE, answer exactly that variability, fusing the mainland's storage-and-administration model with the islands' maritime reach.
The same landscape shaped belief as much as economy. Cretan peak sanctuaries turned mountains into places of assembly and offering, and Hesiod has the earth bear the mountains and the restless sea before either the sky or the Olympian gods — an older, harder world of sea-powers that never fully goes away.
The lecture closed on bronze. Copper alone was too soft to matter until arsenic, then tin, hardened it — and the tin came from nowhere near Greece. The Uluburun wreck, carrying some ten tons of Cypriot copper to one ton of tin of still-disputed origin, is where that whole argument becomes a single, sunk, fifteen-metre hull.
The discussion puts that argument to two tests, both grounded in the lecture though developed further here. Task A turns to the human body, asking what isotopes locked in bone can honestly establish about diet and origin, and where that certainty runs out. Task B turns to the Uluburun wreck itself, asking how much one exceptional find can tell you about an entire system of exchange — and when you have reached the edge of what it can support.
Running through both is a single discipline: knowing the difference between what the evidence establishes and what it merely permits. A skeleton's chemistry fixes a diet and, on this document's reading, a childhood region — but it cannot recover a life. A shipwreck's cargo fixes a supply chain in extraordinary detail — but it cannot, on its own, prove that chain was typical rather than exceptional.
So as you work, keep asking the lecture's central question in each new form: where does the physical evidence stop explaining, and interpretation begin? That boundary is the real subject of the week — one task marks it in bone, the other in bronze.
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Setting up the two tasks
Task A extends Lecture 1's work on the body as evidence with a geographical layer this document adds of its own; Task B is drawn directly from the lecture's own closing case. The notes below draw the line between what the lecture actually said and what each task asks the groups to do with it.
Task AWhat the bones can and cannot tell us
This task is as much a critical-thinking exercise as a historical one, and its foundation is Lecture 1's Body as Evidence material — the finding that carbon and nitrogen isotopes in bone collagen register the balance of plant, animal, and marine food a person ate. Mountains and the Sea does not itself cover isotopic science; this document extends the same method with a geographical reading the lecture's own argument about movement and connectivity invites: strontium and oxygen isotopes in tooth enamel, fixed in childhood and never remodelled afterward, can identify where a person grew up rather than what they ate. Pairs are given a realistic isotopic profile of one Bronze Age individual from the northern Peloponnese: a carbon signature pointing to a cereal-based diet with a little marine protein, a nitrogen value suggesting occasional meat or fish, and — most strikingly — a strontium ratio in the tooth enamel that does not match the local geology but fits the Aegean islands or eastern Attica. The work is to state plainly what this establishes (a childhood spent elsewhere, a broadly known diet), what it cannot (almost everything else about the life), and what further evidence would help. The pay-off connects the two lectures directly: a person who grew up on the islands and died inland in the Peloponnese is geography and biography pulling against each other in a single skeleton.
Task BThe Uluburun shipwreck: what one hull can and cannot prove
This is the lecture's own closing case, taken up directly. A New World Forged from Bronze traces the metal itself from Melian obsidian through soft, cutting-inferior copper to arsenical and then tin bronze, and lands on the merchant ship that sank off Uluburun, on Turkey's Lycian coast, around 1300 BCE, carrying roughly ten tons of Cypriot copper to one ton of tin — close to the correct nine-to-one bronze ratio — alongside African ebony, ivory, cobalt-blue glass, Baltic amber, and a gold scarab naming Queen Nefertiti. Groups are asked to sort that cargo into what it shows about elite exchange as against everyday subsistence; to weigh the lecture's own admission that the tin's origin is disputed — Central Asia on one isotopic reading, Cornwall on another — and ask what kind of evidence could settle a question like that at all; and, hardest of all, to name what a single exceptional wreck cannot tell you about a whole system of trade that has otherwise left almost no direct trace. The pay-off mirrors Task A's: one object, extraordinarily well preserved, weighed against everything it cannot, by itself, prove.