Flat Earth

For question 1.

In this picture, I can see the flat surface is sphered by the ball-like substance. Some people said that the photographic evidence from space is due to the ball-like substance. The substance cover the whole flat land. The sun and the moon are both covered too. And also why there's seas on the earth is also because of the blue substance.When persons arrived the rim of the circle and flat land, the just sail on the substance which other people called the sea. The ball-like substance is translucent so that people could see the planet in the space.

We can see this picture is very exaggerated. A mammoth turtle shouldering three elephants with a flat earth.That's the way how the author give people a deep impression. Some of the people who still believe that the earth is flat said there's no edge of the earth. I also could see the different part of the earth, such as the sea and the land. Some of the people also said that why people could met the same place if they go straight all the time is just a illusion. Persons never go one direction.
http://i65.photobucket.com/albums/h240/bodhifox/Paul_Kidby_Discworld.jpg

For question 2.

1.If the earth isn't flat, how could we stand on the earth, people said that is because of gravitation,but what is that?

2.If the earth isn't flat, the water could not hold on on the earth.

3.We can see the the Milky Way system is flat, the earth shoul be like the galaxies. The earth is the centre, and the sun and other things.

4.The horizon is straight in sight. Seeing is believing.

5.If the earth isn't flat, what about the ruler, how could it be a plane.

For question 3.
NO, I don't think. The seek of the earth and the universe will not be false even if human beings make some mistakes. The seek is just a process, no body know what is the world and what it is like, so anything is better than nothing. Technology nowdays is just to try to know more and more, further and further.