vanishing point/perspective theory is wrong. see
http://www.theflatearthsociety.org/forum/index.php?topic=43972.0Now we are going to disprove bendy light theory.
bendy light theory states that light bends upwards, so when the sun sets, the light bends to high for us to see. like this:

Now, here's the problem. have a second observer in a tower. This is what happens.

The sun appears in the ground! This has never been observed before. How does Fe'ers explain this?
You can say that the light bends upwards but is never bends enough to travel away from the ground. There is a problem with this also.
The problem is: bendy light working like this is not enough to explain the disappearing ship phenomenon.

The observer detects the ship! He will still detect the ship no matter how far away it is.
So,
a) light does bend enough to bend away from the ground.
b) ships disappear for a reason other than bendy light.