One of the best documented methods for determining the Earth's roundness was first performed (to our knowledge) by the ancient Greeks. This was achieved by comparing the shadows of sticks in different locations. When the sun was directly overhead in one place, the stick there cast no shadow. At the same time in a city around 500 miles north, the stick there did cast a shadow.

If the Earth were flat then both sticks should show the same shadow (or lack of) because they would be positioned at the same angle towards the sun. The ancient Greeks found the shadows were different because the Earth was curved and so the sticks were at different angles. They then used the difference in these angles to calculate the circumference of the Earth. They managed to get it to within 10% of the true value – not bad for around 250 B.C.

ah another tactic of abandoning your argument and jumping ship to another, read a book or two of how to construct premises and conclusions

go to your family house, far away, put a camera and a stick, go back home and compare, problem solved.

no its because you are lost in you tunnel vision idealogy, everything I type is biaised, faked, fish eyed.

go test that out and come back.

waste of time, everytime i refute you, you go to another argument without defending the previous one. please read a book

its basic science, if you cant find it yourself, everything I type here is pointless

you know they could proove that 800 B.C. and its 2019 and you defend flat earth.

the problem is everyone think the earth is a sphere, its a proven and scientific fact, you are on the side that try to disproove it as flat, I dont have to defend anything. im naming arguments that you can reserach yourself, but you want me to explain them to you in details, get real, duckduckgo it and try experiement that replicate this fact.

Fallacy

Appeal to majority

Everyone believes it so it must be true

Appealing to empirical evidence

no its because its prooven, I can do the shadow stick experiment and understand the earth is round.

Sure

ok but what about your values for the angles of the sun?

,my nephew could do this.

Look to the sky to measure the ground

@skywalk that only proves the sun is brighter in some areas than other. flat earth believe that the sun revolves ontop of the earth in a circle but that doesn't illuminate the whole earth but just a small part

Movement in the sky can tell you what is possibly moving.

its brightness is also not equally strong everywhere

@rivenator12113 you never explained to me what flat earth model you defend, its hard to talk with you if I dont know what position you are on

We see almost everything moving at 15 degrees per hour

im like try this and you come back at me, no in my flat earth idea it cant be, im like wuttt ?

@skywalk dude, go watch a video on how to argument. all you do is type appeal to authority and red herring fallacies

sure.

if you even know what they are lol

its okay, ill stay in my reality and you can be happy with yo fantasy, everyone happy.

You are trying to use philosophy debate rules for a scientific debate.... doesn’t work like that

sure, knowledge is deadly. keep appealing to authority

This is reality, not philosophy.

@SAM101907 a debate where he keeps switching arguments everytime i refute his point instead of defending his own argument

@Citizen Z actually no, you're looking at the ground, the angle is with the ground, not the sky

@rivenator12113 And you are trying to use the “appeal to authority or majority fallacy” to ignore the fact that there have been thousands of people who have conducted these experiments and came to the same conclusion.

@SAM101907 that is exactly what it is, are you going to believe in everything that is popular/mainstream?

@rivenator12113 Im going to believe empirical facts, not perception

you can't even present a an argument with premise nor conclusion, every debate is based on those 2.

you just keep appealing to '' some people did it and therefore the earth is round ''

Again, you are conflating philosophy with science

you can't question science?

Science doesn’t care about the “laws of logic”, otherwise, quantum theory would be disregarded.