And still! We have no explanation for the huge discrepancy in the calculated distance between Sydney and Adelaide under the Flat Earth Hypothesis and the measured distance in the REAL WORLD.

Flat Earth Hypothesis? Calculated by determining the circumference of the disk at the latitude of the two cities and then the ratio of the circumference against the longitude delta between the two cities.

Flat Earth Hypothesis calculation: 1878 miles (3005 km)

Real world. Maps are published with this info. These maps are used EVERY DAY by people traveling about Australia.

Real World: 740 miles (1184 km)