So taking the typical route of refusing to provide any explanation for how this would work on a FE, and instead throwing out the same refuted BS against the RE?

If you're standing on a supposed globe and looking out to sea, let's say 5 feet eye line and absolute level vision, you would expect the sea to curve down and away from your sight.

How many times will you need to be refuted before you stop spouting this nonsense.

Are you saying this as a fact, or as your entirely incorrect and entirely baseless opinion?

Regardless of how high you are, or the radius of Earth, as the surface directly below you is horizontal, perspective DEMANDS that it will initially rise.

The question is how high will it rise before curvature starts dominating, creating a horizon beyond which the surface goes down and is hidden.

So yet agian, your statement is entirely wrong.

What you should say is:

"If you're standing on a supposed globe and looking out to sea, let's say 5 feet eye line and absolute level vision, you would expect the sea to rise up before curving down and away from your sight creating a horizon."

The only way you could bring the sea and the atmosphere into level view would be to have only a theoretical line of the horizon at that level point and to do that would mean you have to be looking over a level sea against a distant atmosphere/sky.

The only way you could keep the RE out of your level view is by having the RE be tiny (less than 10 m wide) or having an artificially restricted FOV, which needs to be tiny for the real round Earth.

Again, the angle of dip is TRIVIAL to calculate.

You could easily do this if you wanted to, and show just how far below level the RE horizon has to appear.

But you choose not to as you know it will show your claim is garbage.

As I have explained many times, to simplify, assume Earth is a perfect sphere, then construct a right angle triangle. One line is the line from your eyes to a point tangent to Earth. The other 2 are from the point tangent to Earth, and from your eye, straight to the centre.

The right angle is at the point tangent to Earth.

Also construct a line going level from your eye, which will be at 90 degrees from straight down.

The angle between that line, and to the point tangent to Earth is the angle of dip to the horizon, the point which will appear highest in your FOV.

Observe that the angle at your eye in the right triangle is 90 degrees minus the angle of dip to the horizon.

Observe that the angle at the centre of the right triangle is 90 degrees minus the angle at your eye, which means it is the angle of dip.

Observe that the length of the hypotenuse is the radius of Earth plus your height.

Observe that the length of the side of the triangle which isn't the hypotenuse and is adjacent to the angle at the centre, is the radius of Earth.

This means the angle at the centre (the angle of dip to the horizon) is given by arccos(r/(r+h)).

Again, this is not hard to do.

Putting in some numbers, such as a 2 m high observer on a 6371 km Earth gives an angle of 0.05 degrees.

That means in order to not see the round Earth through your level view, you need a FOV less than 0.1 degrees wide, and it needs to be aligned very accurately.

As a comparison, a standard pin (the long part, not the head) has a diameter of roughly 0.5 mm. To have this be as small as that FOV, it would need to be viewed from a distance of 63 cm.

It becomes worse for the global idealists when you start to use elevation because elevation and level sight offers a pinpoint view of the sky only and not the sea as a denser background to create a theoretical line.

Quite the opposite.

It gets even better, where as you change your elevation, the distance to the horizon and the angle of dip to the horizon change, just like you expect on a RE.

Unless you have something to create that pinpoint view (and it really does need to be pinpoint), you need to get very high to block out Earth.

It's impossible for us to be living on a globe. Impossible.

Are you saying this as a fact, or as your entirely incorrect and entirely baseless opinion?

You are yet to show a single thing which makes living on a globe impossible.