Down The Rabbit Hole

Saturday evening. Clear skies over Bass Strait. A twenty-year-old pilot, in a plane fuelled for five hours, calls Melbourne to report an aircraft that shouldn't be there. Four bright lights. Passing a thousand feet above him, fast. Then he says it. "It's not an aircraft." Then a scraping sound. Twelve minutes past seven. The line goes dead.

December, 1916. A cellar in a palace, a samovar, a plate of little cakes. A man eats one, then a second, and waits with a smile for the woman who is never coming. Upstairs, a phonograph plays a party that does not exist. The prince watches. The poison does nothing. So he goes for a revolver.

December 4th, 1872. Two men climb aboard a ship drifting in the Atlantic and find no one: no crew, no bodies, a missing lifeboat, cargo untouched. Today, how a seaworthy vessel ended up abandoned, and a court that went hunting for a crime. We'll look at a rust-stained sword, and at a short story by a young Arthur Conan Doyle that bent the facts.

A man found dead on an Adelaide beach in December 1948 had cut every label from every piece of clothing he wore. His identity was erased so thoroughly that it took 74 years — a plaster death mask, recovered hairs, and a genealogy database built from hundreds of thousands of DNA points — to produce a name. Whether that name has been formally confirmed, and whether it explains anything about how he died, are still open questions.

In the summer of 1908, something exploded over a remote stretch of Siberia with enough force to flatten an area larger than greater London — and left behind no crater, no fragments, nothing. The first scientific expedition didn't reach the site until nineteen years later. What investigators eventually found, and what it took another century to fully interpret, is the subject of this episode.

From a pregnant mummy found near Tarma, Peru, to a Neanderthal cave in northern Iraq dated to 45,000 BC — the practice of elongating the human skull spans more of history than most people realize, and appears to have emerged independently across cultures with no known contact. Why so many separate societies arrived at the same solution, and whether a handful of Peruvian skulls can be fully explained by it, are questions that aren't quite closed.

In February 1980, an eight-year-old boy digging a fire pit on the banks of the Columbia River found three bundles of decaying $20 bills — serial numbers confirmed as D.B. Cooper's ransom. That discovery should have closed things. Instead, the science run on those bills broke the only coherent account investigators had, and left both sides of the debate without an explanation they can fully defend.

Nine experienced hikers cut their way out of a tent from the inside, on a Russian mountainside in February 1959, and walked barefoot into temperatures below minus twenty-five. That single decision is the mystery. In this episode I take the Dyatlov Pass case in the order the evidence builds — the tent, the injuries, the modern avalanche model — and show exactly where the best explanation stops working.

In 1992, four farmers in eastern China pooled their money for water pumps and spent seventeen days emptying a pond the locals believed had no bottom. What emerged was a staircase — and a hand-cut chamber the size of a warehouse. There are twenty-four of them. In one of the most heavily documented civilisations in human history, not a single record says who cut them, when, or why.

The Dogon people of Mali apparently knew, long before modern instruments confirmed it, that the brightest star in the night sky has a companion — invisible, extraordinarily dense, orbiting on an elliptical path. How that knowledge got there is genuinely contested. This episode works through the astronomy, the anthropology, and the rival explanations — without pretending the evidence points clearly in any one direction.

In September 2026, OpenAI announced that a system of roughly ten thousand autonomous AI agents had produced a formally verified proof of one of mathematics' oldest open problems — the question of whether smooth solutions to the Navier–Stokes equations can catastrophically break down. What followed was immediate dispute, a contested independence claim, and a mathematical community that hasn't yet delivered its verdict.

In February 1803, fishermen on the coast of eastern Japan pulled ashore a sealed vessel unlike anything in their maritime vocabulary — rounded hull, iron construction, glass windows, and a young woman inside who spoke no recognizable language and refused to release a small lacquered box. Four separate Edo-period texts record the encounter. Whether those accounts are truly independent of one another is the question the historical record has never resolved.

Charles Hall spent roughly two years as a weather observer in the Nevada desert near Nellis Air Force Base. He came back with a story about a race of extraterrestrial beings — tall, white-skinned, telepathic — operating there with the knowledge of U.S. military command. Decades later, that story hasn't collapsed. The more interesting question is why — and what it reveals about how certain accounts resist falsification.

In early 2024, Anthropic was quietly buying millions of physical books, feeding them through hydraulic cutting machines, scanning the pages, and discarding the originals. A federal court has since ruled that legal. The same company separately paid $1.5 billion to settle claims over pirated digital books used for the same training project. Those two outcomes, and what connects them, are what this episode is about.

In 2025, Niantic sold Pokémon Go for $3.5 billion — and immediately made clear that wasn't the real asset. What the company kept was a database of 30 billion street-level images, built largely by players who thought they were catching fictional creatures. How that database was constructed, what players understood about their role in building it, and what it's now worth — that's what this episode is about.