Just presenting this here for those interested. Not meant as an argument against FE or anything. Some FE folk might even find it interesting.
In watching it I got to thinking that the mathematics used does not care about the shape of the earth but the science does. However, if the science was bad, the math would kick us in the ass PDQ by giving useless results!
This is presented by Dr. Becky. She is a PhD in physics at one of the most prestigious universities on the planet. Oxford. So if you have any interest in astronomy or astrophysics at all giver her channel a gander. She presents some great stuff.