The point was to try it yourself. Not a one of you did. Not a one of you valued empiricism over what you 'believed.'
Instead we showed what you were claiming was nonsense, even if Earth was flat.
The slack in the string, even if using a nylon line at breaking point, will still produce a drop larger than the bulge due to the curvature of Earth.
Except me. Go on. Try the shipping crate. Or the candle. You might be surprised.
The shipping crate experiment has effectively been done countless of times at a much larger scale.
It has been firmly established that the higher you are, the earlier sunrise is and the later sunset is.
We can observe a sunrise illuminating the tops of mountains first and casting shadows upwards from the mountain.
I find the candle experiment quite impractical, especially given just how significant the sag in the string will be.
Why would there be any level or sunken areas on a globe if Gravity has the power to crush mass into spheres?
The exact same argument would apply to a flat Earth.
Whatever magical down making / density sorting force would have levelled everything as well.
Gravity isn't some magical force that will magically turn things into a sphere.
Do you know how gravity forms objects into spheres?
The gravitational attraction will generate a pressure gradient.
As an example, if you had a column of water 10 m high, it will have a pressure of roughly 2 atm at the bottom and 1 atm at the top.
If there was nothing around it to hold it there, that 2 atm of pressure at the bottom will be much greater than the 1 atm of pressure of air at the bottom. This will result in it being pushed outwards and thus spreading out and levelling out.
But that is for a liquid.
If this was a solid instead, with a yield stress above 1 atm then it would still hold together.
The pressure gradient is given by rho*g*h. If this is above the yield stress, the material will fail and spread. If it isn't, then
An approximation for the density and yield stress of rock is 1600 kg/m^3 and 150 MPa (they vary dramatically depending upon the rock.)
This means we can get a height of roughly 10 km. That means we shouldn't expect mountains any higher than 10 km unless they are very light or very strong.
So there is no problem for the RE here.
Gravity will form large masses into roughly spherical objects. Not perfect spheres.
Prove to us
That would be shifting the burden of proof yet again.
Not having 1 particular piece of evidence for a RE doesn't mean RE is wrong or that we are screwed.
Try calculating what that variation should be and then proving that it doesn't exist.
Also note that it isn't as simple as less mass thus gravity is less. By being closer to the centre of mass of Earth, gravity from that would increase. So which factor wins?