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?
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F1FL8pEp.jpg&t=663&c=jsHzxcBPpOak2Q)
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F1FL8pEp.jpg&t=663&c=jsHzxcBPpOak2Q)
Not be poor as fuck and fly in a plane around the world OR, you know how ships seem to go down in the sunset? That's how.