Seeing as my first question hasn’t been followed up on and it’s been about two days, I’m going to move on to my second question.
An observer at the equator looks east. Along that same line of latitude is a tall building. The observer sees it directly East of him. However, on a flat Earth, the building, due to how the Earth curves around the North Pole, would appear slightly north of east. How can this be explained?
If you’re having trouble getting what I’m trying to say, I can draw a diagram for you.
You'll be stunned to learn you aren't the first person to ever notice this and draw it to our attention.
I'm going to use your first question to answer your second.
You have noticed that the other flat earth places claim aircraft would change altitude. And of course they wouldn't. But if they flew east, you also have to appreciate that East is NOT a straight line on a round earth. Otherwise as those flat earthers note, you'd just carry on straight into space. East is a curve around the earth.
On a flat earth we have the same thing. East is NOT a straight line. In fact the dictionary definition of East is
east
noun
a cardinal point of the compass, 90° to the right of north.
And if north is the point in the centre of a disc, then you travel in a circle around north in order to always be at 90 degrees from it.
In Flat Earth Theory, this can be confusing, because as you note, you can have a building North East of you and travel directly East to get to it.
The reality is, things that appear are East of you aren't actually East of you. ... remember its the same problem on a round earth unless you can burrow through it. But to avoid confusion, flat earthers have a more advanced co-ordinate system than their lazy round earth brethren. We actually have 6 cardinal points ... because we include turnwise and widdershins. So you now see something North East of you, and travel Widdershins to get to it. Magnetic compasses use North of course, and if you follow one East, the more precise term is you follow it widdershins ... in a circle, East is just the instantaneous direction that would have a round earther jut out into space.
I made a compass just for you. I hope you feel appreciated.