Question 1

Who was Stanislav Petrov?

Accepted Answer

A Soviet air defence officer who, on **26 September 1983**, decided that his early warning system's report of an incoming American nuclear attack was a false alarm — and did not pass it up the chain of command.

**What happened.** Petrov was duty officer at the Serpukhov-15 command centre monitoring the satellite-based early warning system. Shortly after midnight, the system reported a single intercontinental ballistic missile launched from the United States. Minutes later it reported four more. The system's display indicated the highest confidence level.

**Protocol required immediate escalation**, which would have set in motion a decision process for retaliation with very little time to reconsider.

**Why he judged it false.** His reasoning was straightforward and correct: a genuine first strike would involve **hundreds** of missiles, not five, because a limited attack would invite annihilating retaliation. He also knew the satellite system was new and had not been fully proven, and ground radar — which would confirm an attack later in its flight — showed nothing.

**He reported a system malfunction.** For the following minutes he did not know whether he was right, and has described waiting to find out whether missiles would appear.

**The cause.** Sunlight reflecting off high-altitude clouds at an unusual angle, aligned with the satellite's orbit near the autumn equinox — a scenario the system's designers had not anticipated.

**Why the context mattered.** The incident occurred three weeks after a Soviet interceptor shot down Korean Air Lines Flight 007, during one of the most dangerous periods of the Cold War, with mutual suspicion extremely high.

**What happened to him.** He was neither rewarded nor punished in any straightforward way — initially praised, then questioned about the incomplete logbook, and reassigned. The incident remained classified until the 1990s. He was later given international awards and consistently rejected the description of himself as a hero, saying he was the right person in the right place and had simply done his job.

**The lesson usually drawn:** automated warning systems require human judgement precisely because they can be confidently wrong.

Question 2

Did Hedy Lamarr really invent something important?

Accepted Answer

Yes. She co-patented a frequency-hopping system for torpedo guidance that anticipated techniques underlying modern wireless communication — and the popular framing that she "invented Wi-Fi"

Question 3

Who was Lise Meitner?

Accepted Answer

The physicist who, with Otto Frisch, worked out the theoretical explanation for nuclear fission and gave it its name — and who was then excluded from the Nobel Prize awarded for the discovery, in

Question 4

Who was Alan Turing and what happened to him after the war?

Accepted Answer

Alan Turing was a British mathematician whose 1936 paper on computable numbers introduced the theoretical machine that underpins modern computing, and who went on to play a central role in breaking

Question 5

Was Mata Hari actually a spy?

Accepted Answer

The evidence that she did any meaningful espionage is remarkably weak, and modern historians largely regard her as a woman executed for reasons that had more to do with French morale in 1917 than

Question 6

Was Rasputin really impossible to kill?

Accepted Answer

The famous account — poisoned, shot, beaten, drowned, and surviving each — comes almost entirely from one participant's self-serving memoir, and the physical evidence contradicts key parts of it. The

Question 7

Who was Nikolai Vavilov?

Accepted Answer

A Soviet botanist and geneticist who assembled the world's first great seed bank to secure food supplies against famine, and who died of starvation in a Soviet prison in 1943 — a fate that is among

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