just my 2 cents.

I think the truth is somewhere in between, I have been on Geo-curvature studies, and due to the government holding back long distance accurate laser technology as its considered thrice, firstly, were not educated enough to not stick $5000 worth of equipment in someones eyes, secondly, the larger ones give or a low frequency gamma radiation in the generator (proven scientifically wrong) and lastly, the equipment can be used for long distance guidance systems and is against the public weapons restraint law, lol

but I have found out that school textbooks say there should be a 8inch (7.98 to be exact) drop in the first mile (escalating over distance) that we proved wrong easily, there is a famous canal in midlands area UK (research it!) that has a 6 mile perfectly straight line, we can only get our hands on a 3 mile laser, but was able to keep a steady beam 6 inches above the water line for the 3 miles (well actually we got to 2.988 miles) so either the water and light bends at the same rate, thats getting into physics a little heavy but it only takes some light research to see thats not possible, or there is no curvature in 3 miles!

I on the other hand think there is a small curvature, but our equipment was not accurate enough, I believe there is a drop over our test distance of about 12-15 mm over our test patch. it was initially measured correct as I say our laser was not military grade and was getting large and weak at the 3 mile range so guessing the epicenter was not easy, and my voice was outnumbered at time of making official recording.

I think the world as we know it much much bigger, and the extra land is being kept from us, possibly...say... behind the ice wall of the "southern hemisphere" something similar to the UN flag picture of flat earth with all the extra islands.

its just a theory, lots of trolls in this thread, I don't go preaching or anything, I just don't believe all the fake pics and media about our environment.

TL/DR so I don't believe its flat, but I don't believe this perfect "marble earth" either.

EDIT - is there a reason why we cant go deeper than 8k, or and real recorded evidence of going higher than 8k? anyone seen the vid of the home made rocked hit the barrier 8k up and the vid got taken down?