I'm assuming Roger Stone is not great at Geoguessr
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Technically any two points on earth are in a same hemisphere, depending on how you cut it.
Even if they're exactly 180 degrees apart both East-West and North-South?
Isn't that just any point 180⁰ away on a sphere? What I mean is, for any point on a sphere, 180⁰ away in any of the infinite ways you could slice that sphere is the same point diametrically opposite.
I don't have a formal proof, but you could consider a sphere a combination of an infinite number of equal radius discs which share the same centre. Since you've picked a point A on a disc, 180⁰ away is diametrically opposite it. Repeat for any of the discs on which point A rests and you get the same diametrically opposite point.
Yeah, I guess you're probably right.
I was just thinking of Earth with a predefined coordinate system. Two places that may be 180 degrees apart east-west aren't necessarily 180 degrees apart north-south, i.e. 45N 90E/W. One is in Wisconsin, the other is northern China near the Mongolian border.