How as an individual can I know if the Earth is a sphere or a flat disc? What experiment can I do that doesn't involve trusting information from a 3rd party that would prove what the geometry really is?
http://i.imgur.com/O8IpMmi.jpg
http://i.imgur.com/O8IpMmi.jpg
Where is this theory came from? It may and may not be true because no one really knows everything
