[Zero Sum]

If you start traveling East and I start traveling West, we eventually will meet as long as we keep going or one of us doesn’t start going south.

Actually, if you both start at the same point in the northern hemisphere and one of you starts out going east and the other starts out going west and you each travel along the geodesic (the equivalent of a "straight line" on a sphere) at the same speed then you will meet again in the southern hemisphere.

But what does this have to do with the origins of life?

[mnehring]

philosophical, not scientific point..