# Best proof the earth isn't flat **URL:** \ **Category:** Miscellaneous and Personal Stuff I Must Share\ **Created:** [October 10, 2026, 9:19pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737 "2026-10-10T21:19:17Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![P-man](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/p-man/32/3606_2.png) [@P-man](https://boards.straightdope.com/u/P-man)\ **Post date:** [October 10, 2026, 9:19pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/1 "2026-10-10T21:19:17Z")
Forget all the stuff about it being visible from the moon. If it were flat, don’t you think people who lived near the edge would be charging a mint to come and look over the edge? They’d make a killing. ---
**Author:** ![Der\_Trihs](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/der_trihs/32/233_2.png) [@Der\_Trihs](https://boards.straightdope.com/u/Der_Trihs)\ **Post date:** [October 10, 2026, 9:24pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/2 "2026-10-10T21:24:16Z")
> [@P-man](#): > > Forget all the stuff about it being visible from the moon. If it were flat, don’t you think people who lived near the edge would be charging a mint to come and look over the edge? Only if the edge is accessible, some flat Earth models postulate a setup where the edge can’t be reached or it is infinite/wraps around like a video game and has no edge. ---
**Author:** ![DPRK](https://avatars.discourse-cdn.com/v4/letter/d/4491bb/32.png) [@DPRK](https://boards.straightdope.com/u/DPRK)\ **Post date:** [October 10, 2026, 9:27pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/3 "2026-10-10T21:27:26Z")
> [@Der\_Trihs](#): > > the edge can’t be reached or it is infinite/wraps around like a video game and has no edge. Sounds like a hyperbolic plane or a torus, neither of which are curved like the earth (as measured by Eratosthenes…) ---
**Author:** ![Ancient\_Nerd](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@Ancient\_Nerd](https://boards.straightdope.com/u/Ancient_Nerd)\ **Post date:** [October 10, 2026, 9:47pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/4 "2026-10-10T21:47:25Z")
How about the need for time zones? ---
**Author:** ![Seanette](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/seanette/32/9139_2.png) [@Seanette](https://boards.straightdope.com/u/Seanette)\ **Post date:** [October 10, 2026, 10:07pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/5 "2026-10-10T22:07:33Z")
If it were flat, cats would have pushed everything off by now. 🙂 ---
**Author:** ![LSLGuy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lslguy/32/5813_2.png) [@LSLGuy](https://boards.straightdope.com/u/LSLGuy)\ **Post date:** [October 10, 2026, 10:13pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/6 "2026-10-10T22:13:22Z")
Obviously there is no proof that a real Flerfer would accept. Obstinate blind faith and insanity have no intersection w the world of objective reality and logic. IOW … Forget it ~~Jake~~ P-Man, it’s Looney Town. ---
**Author:** ![P-man](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/p-man/32/3606_2.png) [@P-man](https://boards.straightdope.com/u/P-man)\ **Post date:** [October 10, 2026, 10:40pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/7 "2026-10-10T22:40:13Z")
Maybe someone should sell trips to the edge of the earth. These days I’m not so sure no one would fall for it. ---
**Author:** ![Elmer\_J.Fudd](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/elmer_j.fudd/32/1211_2.png) [@Elmer\_J.Fudd](https://boards.straightdope.com/u/Elmer_J.Fudd)\ **Post date:** [October 10, 2026, 10:58pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/8 "2026-10-10T22:58:37Z")
> [@LSLGuy](#): > > Obstinate blind faith and insanity have no intersection w the world of objective reality and logic. But blind faith is usually a financial windfall for its leaders. Remarkably, the flat earthers have failed to monetize the gullibility of their followers. They should definitely book expensive cruises on cheap watercraft to the edge of the world and sink them once out of sight of land. Money + evidence of folks sailing off the edge of the world. Win, win. ---
**Author:** ![Exapno\_Mapcase](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/exapno_mapcase/32/1051_2.png) [@Exapno\_Mapcase](https://boards.straightdope.com/u/Exapno_Mapcase)\ **Post date:** [October 10, 2026, 11:10pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/9 "2026-10-10T23:10:28Z")
Where would flat-earthers get the money for those trips? Shout up to their moms from their basements? ---
**Author:** ![steronz](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/steronz/32/11765_2.png) [@steronz](https://boards.straightdope.com/u/steronz)\ **Post date:** [October 10, 2026, 11:33pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/10 "2026-10-10T23:33:16Z")
You would think, right? But the fact that this doesn’t happen just highlights how deep the conspiracy goes, and how powerful the illuminati really are. ---
**Author:** ![Elmer\_J.Fudd](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/elmer_j.fudd/32/1211_2.png) [@Elmer\_J.Fudd](https://boards.straightdope.com/u/Elmer_J.Fudd)\ **Post date:** [October 10, 2026, 11:37pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/11 "2026-10-10T23:37:28Z")
> [@Exapno\_Mapcase](#): > > Where would flat-earthers get the money for those trips? I would trust them to wash my car. Not sure if I would buy a box of cookies from them… ---
**Author:** ![Ancient\_Nerd](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@Ancient\_Nerd](https://boards.straightdope.com/u/Ancient_Nerd)\ **Post date:** [October 10, 2026, 11:44pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/12 "2026-10-10T23:44:20Z")
> **[Charles K. Johnson](https://en.wikipedia.org/wiki/Charles_K._Johnson)** > > Charles Kenneth Johnson (July 24, 1924 – March 19, 2001) was, from 1972 until his death, the president of the International Flat Earth Research Society, which he and his wife ran from their home in California. He claimed that the Apollo Moon landings, and space exploration in general, were faked to lead people away from the biblical truth that the world was flat. Charles Kenneth Johnson was born on a farm near San Angelo, Texas on July 24, 1924, and grew up in San Angelo. He was raised as a membe... A prominent believer. ---
**Author:** ![don\_t\_ask](https://avatars.discourse-cdn.com/v4/letter/d/e68b1a/32.png) [@don\_t\_ask](https://boards.straightdope.com/u/don_t_ask)\ **Post date:** [October 11, 2026, 1:26am UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/13 "2026-10-11T01:26:04Z")
It is unfortunate that it isn’t flat. If it was we could just go to the edge and sweep all our environmental waste underneath. ---
**Author:** ![Hari\_Seldon](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/hari_seldon/32/5173_2.png) [@Hari\_Seldon](https://boards.straightdope.com/u/Hari_Seldon)\ **Post date:** [October 11, 2026, 1:56am UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/14 "2026-10-11T01:56:56Z")
> [@Der\_Trihs](#): > > Only if the edge is accessible, some flat Earth models postulate a setup where the edge can’t be reached or it is infinite/wraps around like a video game and has no edge. Yeah that must be it. It curves around to a … sphere. ---
**Author:** ![Exapno\_Mapcase](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/exapno_mapcase/32/1051_2.png) [@Exapno\_Mapcase](https://boards.straightdope.com/u/Exapno_Mapcase)\ **Post date:** [October 11, 2026, 2:10am UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/15 "2026-10-11T02:10:53Z")
Wait. I’ve got it. The earth can’t be flat because turtles don’t exist. Gotcha. ---
**Author:** ![Chessic\_Sense](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chessic\_Sense](https://boards.straightdope.com/u/Chessic_Sense)\ **Post date:** [October 11, 2026, 2:59am UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/16 "2026-10-11T02:59:54Z")
They do. They suggest this is why there are international treaties protecting Antarctica and why it costs tens of thousands of dollars to go there. It’s really just The Man keeping you from figuring out it’s an impenetrable ice wall. Also, they sometimes suggest only the livable surface of the Earth is flat. The underside doesn’t have to be. It could be flat like a coin, a sheer cliff wall like a mesa, or even rounded like a lidded bowl. Absurd, but there you are. The answer to your OP is that people can’t sell trips to the edge because of the big, secret government cabal. ---
**Author:** ![Czarcasm](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/czarcasm/32/4050_2.png) [@Czarcasm](https://boards.straightdope.com/u/Czarcasm)\ **Post date:** [October 11, 2026, 3:08am UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/17 "2026-10-11T03:08:06Z")
I am afraid that there is _no_ amount of proof that will suffice. Flat earthers have come up with an idea that is not disprovable at all-there is no “What would it take for you to change your mind?” question that they will not directly ignore, no evidence they will not claim is fake, no direct testimony they will not call a lie. ---
**Author:** ![LSLGuy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lslguy/32/5813_2.png) [@LSLGuy](https://boards.straightdope.com/u/LSLGuy)\ **Post date:** [October 11, 2026, 1:13pm UTC](https://boards.straightdope.com/t/best-proof-the-earth-isnt-flat/1033737/18 "2026-10-11T13:13:49Z")
Faith is like that.