Why the Earth is Flat

I noticed that there has been a growing and overwhelming number of flat earth theorist at Sandy Spring Friends School. Is the world really what you think it is? I did a poll and I found that 23 out of 50 people said that the earth was flat. That means that about 46 percent of people at SSFS believe the earth is flat. How is this possible? What makes them believe this? These questions will be answered in the video.