Of course, that information, as you say on the answer phone from the flight was wrong, because there had been a delay of 40 minutes.

BBC: News | NEWSNIGHT | Alison Hoglan interview transcript

Before the latest figures were announced, Roy Norris, former chair of the Welsh Ambulance Services NHS Trust, said people would be wrong to think that the simple answer was to have more ambulances.

BBC: Ambulance service miss emergency response times

That was surely the wrong answer, even leaving aside the debatable issue of whether cabinet secretaries can influence the level of exchange rates.

ECONOMIST: Currencies

Look back at Britain's industrial history with today's obsession with the Internet in mind, and you start to grasp at what may be the truest answer of all: that what went wrong with British manufacturing industry was not that it declined so fast, but that so much effort went into arresting that decline.

ECONOMIST: British industrial decline

Sometimes one of the pair was actually a lab assistant instructed by Nemeth to provide a wrong answer.

NEWYORKER: Groupthink

He looked like a security guard in a suit and hi-viz gilet, but he unfurled a banner saying "Nuclear: wrong answer", and as he crawled along a high iron girder, the word "Greenpeace" was revealed on the back of his jacket.

BBC: DETAILS OF TONIGHT'S PROGRAMME