cool video.
Flat earthers must believe that the moon is many times smaller than it is which accounts for its apparent size in the sky.
I wonder then how they account for the fact that our current understanding of both the Moon's size (it's mass) and it's distance accounts perfectly for the tides and that a linear reduction in mass along with a decrease in distance would not make the numbers come out right in an attempt to figure out the tidal forces because of the inverse square law.
In other words, if an object is half as far away, in order for its apparent size to remain the same, its size must be reduced by half as well. But gravity doesn't work in this linear fashion. An object that is half as far away doesn't pull twice as hard, it pulls four times as hard. This exponential relationship between the pull of gravity and the distance of an object makes the flat earth model unworkable. There is simply no way to rigorously account for the observable facts of reality from within their ridiculous model.
Clete
How do we determine the mass of the moon? Isn't it by the orbit it is in, its apparent size, and the effects it has on the earth, including the tides? If the moon were just 3000 miles away, and it's apparent size were the same, then to make its gravity the same would mean a decrease in density/mass.
I'd be curious to see what the flat earth model would do for the tides, with the moon and sun pulling in the same direction (up). But even before that, you have to find out how they pretend to deal with the gravity of the moon and sun, since the earth gravity is generated by acceleration. How do the sun and moon stay in their 2-d precessing circular orbits around the vertical extension of the north pole?
If the gravity is generated by acceleration, the tidal bulges become...what? daily sloshing from a wobble in the flat earth as it accelerates upward?
And, once you get back to talking about acceleration causing the appearance of gravity, there are so many other things to deal with--like the problem of the atmosphere being held in place by...what? the ice walls? They sure have to be a lot bigger than the few hundred feet or even thousand feet shown in Dave's pictures.
I tend to agree with Knight that it's an interesting discussion, because you have to get beyond the things you've been taught all your life. But i also agree with you that Dave isn't really wanting to consider the evidence.