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I could ask that question back: What would be sufficient evidence for you that the Earth is flat?

Here is a chat room where you can go and get all the answers to your questions:

Here is a proof of the flat earth from Jenna Fredo:

Thank you Lasse for sharing this video, the experiment done here is very clever. Finding such an open area with a proper distance to buildings we can all easily research is a great experiment and a good way to settle this discussion.

Now as far as I can see this video only provides evidence of a round Earth... First of all, the buildings appear only from their "waist" and above. I mean, you can clearly see that with your own eyes at both max and medium zoom, that the horizon cuts off the lower parts of the buildings.

Much more significantly though, is that the entire Toronto Islands, with the Toronto Island Park (including some tall trees), are completely gone. Despite the fact that they are literally right between the photographer and the CN Tower and Roger’s Center (see image below).
Rogers Center.png

Now how do you best explain that from a flat earth perspective? Why can’t we see the island, any of the trees, or the lower parts of the buildings?

As for the numbers she gives at the start, where she claims that the curvature should have dropped the buildings by 517 ft (158m), these are simply not applicable. Why? Because they are obtained from a formula that measures drop height based on the assumption that the Earth is a perfect sphere (it uses the Pythagoras theorem to obtain change in height based on a perfect 2 dimensional circle). Which we have known for decades that it is not. A perfect sphere would mean that you have a perfectly slick and even curvature for every single mile. But that is not the claim made by any scientists. We know the Earth is not like a perfect circle, or a smooth billiard ball. I mean, we have 7km tall mountains and 10km+ deep oceans, so of course it is not a perfect sphere. And therefore you cannot use those formulas as some places on Earth it will be different from others.

Below you can see what we at the European Space Agency have estimated the shape of the Earth to be based on data from the GOCE satellite which measures gravitation fields used, among other things, to measure the shape of the Earth. You can see it explained here by the New Scientist

Or in a video here.

As you can see yourself on the video, at different points on the Earth curvature will be different. Now, if you pause the video at 20 seconds you will see that North America is actually relatively flat. So that explains why the curvature is not as much as she thought it would be when she used a formula based on a perfect sphere.

Still I’m eager to hear how you explain why we don’t see the trees on the Toronto Islands, or the lower parts of the buildings.
Peace

Dude the earth is flat, you are repeating pseud science also called scientism. Those buildings should not be visible at all, if there was curvature. The bottom of buildings always gets obscured by a lot of different factors. Research it!

I do not want to continue to argue with you, since I have better things to do. I will continue to call you out as a fraud and soon more flat earthers will be here to do the same!

Wow! @lasseehlers he provides direct evidence, and refutes the video you posted with real (checkable) science, and you call it pseudoscience!

You are the perfect psychological specimen for cognitive dissonance, and confirmation bias. You simply dismiss what does not fit in with your world view, even in the face of overwhelming evidence.

The earth is not flat, and saying so makes you appear (probably) a lot less intelligent than you actually are. For instance, it is impossible to explain the correolus effect on a flat earth.

Anyway, I doubt I will change your mind, if the EVIDENCE above can't, nothing will. Hopefully one day you'll realise how silly you've been. We won't laugh at that point, we'll commend you for wiping away the psychological fugue.

Sigh, here's some more evidence for you to ignore

Cg

He did answer our question though:

NO evidence will ever convince him that his beliefs are wrong.

He would benefit from this: https://yourlogicalfallacyis.com/burden-of-proof

I wonder what would happen if you actually flew him up there; would he claim that you had somehow drugged or doctored the image in front of his eyes?

Cg

I think he'd sue us for unlawful tampering with his worldview... possibly accuse us of black magic.

  1. It is not pseudo-science if EVERYONE believes it, if the proof to the contrary is flimsy at best, and we have tons of proof that it is so.

  2. Scientism is defined as "excessive belief in the power of science", therefore it has nothing to do with pseudo-science ("a collection of beliefs or practices
    mistakenly regarded as being based on the scientific method")

I have a question. How thick is the flat earth ? Is the Sun flat too ?

Are all the planets flat, or are you going to go with the "EVERYTHING is a lie made up by the government to control us".
in which case...
how are you alive ?

If there's a global conspiracy that only you and a select few know of... you do realize you'd all be dead, right ?

They. Have. All. The. Armies. and. control. all. of. mankind. through. apparent. mass. hypnotism.

If the earth was flat and everything was a conspiracy by the Uber-Government, then they could just whisper to your local police force "he's annoying" and they'd eliminate you.
And find a sudden appearance of tons of incriminating material to accuse you of secretly planning to murder the entire royal family.

I'll never understand how some people can believe the entire political class is in a gigantic conspiracy against them and not realize they would have already won if that was the case.

check out this also if you like, I am out now, have other things to do... hope you wake up:

There is no sufficient evidence for people who believe they are "in on something" or that they are cleverer than the rest of us poor, mere mortals.

I mean, in all flat earth drawings, it would have to be day or night, across the entire planet at once, this is the easiest thing in the world to disprove. However they will just bend their "theory" to fit this anomaly.

The best thing is to ignore them completely.

Cg