It does not matter to me, flat earth, round earth, for things go on the same, and I do not care to look in to it.
But this only took about 10 seconds to think of it, and causes me to not even want to check in to anything of the flat earth for sure.
Because why do this study and that study, when get to the heart of the matter that will disprove it.
I thought of this, how we observe night and day, when it goes from night to day, and day to night.
We know that it is dark for a while so it is obvious the sun's light does not affect our area at times, so the light can only go so far and then have an ending point then darkness.
If the sun is always 3000 miles above a flat earth's surface then there would have to have an ending to the light, and an ending to the dark, a separation between the two, a dividing line.
Which the light would chase the darkness, and the darkness would chase the light, for the sun is always 3000 miles above the earth.
The light can only go so far then darkness, and the darkness can only go so far then light, because the sun is always above the earth's surface.
So according to a flat earth this is how we should observe it going from dark to light, and light to dark, for the darkness would chase the light, and the light would chase the darkness, having a dividing point between them.
It would be dark in our area, and then we would see the light coming our way, but it would still be dark in our area until the light reaches our area, and then the light would pass through our area, and we would see the darkness going off in the distance, and when it is light in our area we would see the darkness coming our way, but it would still be light in our area, and then the darkness would pass through our area, and we would see the light going off in the distance.
That is how we would observe it going from light to dark, and dark to light, and it can be no other way, for the sun is always 3000 miles above the earth's surface, so there has to be a dividing point between light and dark, and the dark would chase the light, and the light would chase the dark.
But we do not observe it going from dark to light, and light to dark, in that way, for when we first see the sun in the morning, boom, it lights across the whole area that we can see, and when we do not see the sun at night when it disappears to our sight, boom, it goes dark across all the area we can see.
As soon as the sun appears it is light across the whole area we see, and as soon as we do not see the sun it is dark across the whole area we see, from one side to the other.
The light does not chase the dark, and the dark does not chase the light.
For on a round earth as the sun is coming up it will light across the whole area from one end to the other, and when it goes down it will be dark from one end to the other.
The way we observe it going from light to dark, and dark to light, can only be on a round earth.
It could not happen on a flat earth with the sun always 3000 miles above the earth's surface.
And they say the earth is not round because the Bible says the 4 corners of the earth, but a flat circle does not have 4 corners either, at least that is what I learned when I was a toddler when I tried to fit the circle peg in the square hole.