
"And it is at least 9,000 kilometres deep", he adds. Mr Davis now believes "the Earth is flat and horizontally infinite - it stretches horizontally forever". "We humans seem to be pleased with just accepting what we are told, no matter how much it goes against our senses." "I came to realise how much we take at face value," he says. 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". "Many use the term 'flat-earther' as a term of abuse, and with connotations that imply blind faith, ignorance or even anti-intellectualism." "People are definitely prejudiced against flat-earthers," says John Davis, a flat earth theorist based in Tennessee, reacting to the new Microsoft commercial.

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.
