# Tag Info

Accepted

### what-if.xkcd.com: stabbing (simply connected) regions on the 2-sphere with few geodesics

Looking at this old question again, I'm now fairly convinced that the easiest route of solving this problem is using similar ideas to the one suggested by David E Speyer in a comment, namely basically ...
• 10.3k

### Randall Munroe's Lost Immortals

Four observations: In the case that they are allowed to plan beforehand, person A and B could both agree to follow a random geodesic, leaving a trail. Any two geodesics are guaranteed to intersect in ...
• 11.5k
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