Again, why shouldn't the RE have a horizon?
Simple question, simple answer.
Assuming it was magically possible to stand on a globe as you believe it to be, then looking over that globe with level sight will only offer you a curved angle away from your level vision. It leaves you with sky. That's it.
You may not like this answer but it is an answer, so don;t be coming back saying I haven't answered.
No, it isn't an answer, it is yet another deflection.
I didn't ask you why the RE doesn't have a horizon at eye level.
I asked why it doesn't have a horizon. That would include one which is not at eye level, including those below it, as repeatedly observed in reality.
Given the previous interactions, you KNOW that I am not limiting it to a level sight, such as by the previous line of inquiry, you start with your head looking down seeing nothing but ground/sea, and slowly lift it up until you can see nothing but sky. Visually what happens in between?
What separates the ground/sea from the sky?
This means you didn't answer my question.
Instead you substituted the question with a different question, one you felt you could answer.
So don't come back saying you have answered, when you threw in an additional restriction of a 0 degree level sight which were not in the original question.
So I'll ask again, why shouldn't the RE have a horizon?
This time see if you can actually answer the question asked rather than a different one you want to answer because you find it easier.