As JRowe now has his dual-earth model, he will be required to defend it as part of its development.
I understand it's in early development, so I'm not going to ask anything too difficult for now, but maybe more people can challenge it as time goes on.
Challenge 1.
JRowe: Convince one other person that dual-earth is now the leading flat-earth model. Must be someone on, or prepared to join, this forum. No sneaky Alts!