People who think the earth is flat

From the BBC News Magazine:

On 24 December 1968, the crew of the Apollo 8 mission took a photo now known as Earthrise. To many, this beautiful blue sphere viewed from the moon's orbit is a perfect visual summary of why it is right to strive to go into space.

Not to everybody though. There are people who say they think this image is fake - part of a worldwide conspiracy by space agencies, governments and scientists.

Welcome to the world of the flat-earther.

Flat earth theory is still around. On the internet and in small meeting rooms in Britain and the US, flat earth believers get together to challenge the "conspiracy" that the Earth is round.

"People are definitely prejudiced against flat-earthers," says John Davis, a flat earth theorist based in Tennessee, reacting to the new Microsoft commercial.

"Many use the term 'flat-earther' as a term of abuse, and with connotations that imply blind faith, ignorance or even anti-intellectualism."

Mr Davis, a 25-year-old computer scientist originally from Canada, first became interested in flat earth theory after "coming across some literature from the Flat Earth Society a few years ago".

"I came to realise how much we take at face value," he says. "We humans seem to be pleased with just accepting what we are told, no matter how much it goes against our senses."

Mr Davis now believes "the Earth is flat and horizontally infinite - it stretches horizontally forever".

"And it is at least 9,000 kilometres deep", he adds.

James McIntyre, a British-based moderator of a Flat Earth Society discussion website, has a slightly different take. "The Earth is, more or less, a disc," he states. "Obviously it isn't perfectly flat thanks to geological phenomena like hills and valleys. It is around 24,900 miles in diameter."

Mr McIntyre, who describes himself as having been "raised a globularist in the British state school system", says the reactions of his friends and family to his new beliefs vary from "sheer incredulity to the conviction that it's all just an elaborate joke".

So how many flat-earthers are around today? Neither Mr Davis nor Mr McIntyre can say.

Perhaps we should require that "both sides" be taught in the science classes of our schools.