The “Time Is Up Challenge”, I take it?
I’m afraid it’s going to be fruitless debate, where you spend most of your time disagreeing on what you disagree on.
I don’t think the book has been released, but here’s what I think I understand about it. John’s “Non Euclidean Flat Earth” idea is pretty unique and quite unlike what just about every other flat earther believes. The Earth is “flat” in the same way a satellite in a circular or elliptical orbit can be said to be be traveling straight along a geodesic.
It seems to allow John to accept all “round earth” geometry, while still maintaining the earth is really flat. It’s an interesting idea, and it does at least attempt to reconcile a flat earth belief with all the observations indicating otherwise. It’s also quite incompatible with everyone else’s flat earth ideas, which is interesting as John will often defend those ideas as well as his own. It’s a fantastic get out of jail free card though, as John can switch to his Non Euclidean idea whenever debate turns to observations that don’t fit a “standard” flat earth.
There’s an article he wrote here:
https://www.theflatearthsociety.org/home/index.php/blog/einsteins-relativity-proves-earth-flatAnd a thread I started a while back to discuss it, which unfortunately didn’t last very long, here:
https://www.theflatearthsociety.org/forum/index.php?topic=81718.30So the topic you’ve picked for the challenge won’t make any sense against John’s Non Euclidean idea, as he can use the normal accepted size and distance to the moon. Of course he could have just said that in the beginning and suggested you pick something else.