It is possible to approximate pi with throwing needles on a grid, but the result Italian mathematician Mario Lazzarini published in 1901 seems too good to be true. But was it fraud? A close look into his original paper sheds some new light on this issue.
Close to the so called ‘Face on Mars’ there are twelve hills which are likely the remnants of mud volcanoes. These hills are positioned in such a way that you can find all kind of remarkable mathematical relations in the triangles and other figures you can form with those. A hidden message from an alien civilization? Or are these calculations an example of confirmation bias?