It was invented by a carpenter in Bury in 1896 called Brian Gamlin. If you go around the dart board adding up the differences between adjacent numbers – 20 and 1 for example – it would come to 198. The highest possible it could come to is 200, but it’s well organised to reduce the chance of a lucky shot.
Yes, absolutely. A piece of paper can, in fact,be folded more than 7 times. It has been done many times in many places all around the world. It’s just that the people who accomplished the feat used a lot of paper! In other words, it was not a piece of paper that you could simply tear from some notebook. Also, there were numerous people involved in the process.