Before I say anything, are you serious, or not serious?
EARTH IS FLAT! REAL PROOF (SERIOUS)

The Earth is an Oblate Spheroid, bulging slightly at the equator. As you move away from the equator, the diameter of the Earth decrease until reaching an extreme at either pole where the diameter is NIL.
Great Circle routes are used when flying between points on the Earth as they are the shortest distances between two points. A flight from San Francisco to Singapore "curves" north as the distance is shorter than if flown in a "straight line" on a map. (See below).
Sorry, not flat (and not round) but oblate spheroid! (By the way, I used to be a Navigator and have flown around the globe It's a big world.)

well most flat earthers claim the earth is flat as they don't understand gravity which is not a force like newton's theory says but a curvature of spacetime which has been proven experimentally. if you want to argue that makes no sense as wireless communication is based on general relativity and so according to you your phone shouldn't work? so can your wonderful flat earth theory explain how a phone works


why is this even a debate. its stupid that people actually get into heated arguments that the earth is a flate plane. even though there's so much evidence to say that it isn't, people continue to persist. it's completely unnecessary.

why is this even a debate. its stupid that people actually get into heated arguments that the earth is a flate plane. even though there's so much evidence to say that it isn't, people continue to persist. it's completely unnecessary.
Why did you even post here then?

My man has no idea what circumference is or means lmao.
Even if u are trolling this is the dumbest troll i've seen in a while because trolling is usually using some sort of logical loophole to bait people into falling for an argument that is a red herring.
But here u just completely are so inadequate at physics and mathematics that u dont realise there's a huge difference between a circumference and just a straight line from one place to another.

The flat earth society has millions of members all around the globe
read that three times really really slowly
FWIW the plane of the great circle passes thru the center of the earth, the source and the destination. This I learned in a book and subject I can no longer find anywhere: SPHERICAL GEOMETRY. In plane geometry, the sum of the angles of a triangle equal 180 degrees. With a spherical triangle, the sum is greater than 180.
San Francisco to Singapore: 8450 miles
The mileage on that value are based on how a crow flies, with the Great Circle Theorem (I cheated with the internet.
)
The radius of the Earth is only 4000 miles (rounded for convenience).
Looks like Singapore and Silicon Valley are nearly on opposite sides of the earth. As 8000 miles connects both cities through the earth and a plane takes 8450 miles around the earth, Sum Ting Wong, as the mileage must be far greater going around the earth than through it.
The only way for this to be true is that the EARTH IS FLAT!
(*dabs*)