Re: This came up at Winter League last night...can anyone help

> 
> Tunneling or not, the same four spots (i.e. the corners) are closest,
> no? The center of the field is, instead, the farthest--whether it's as
> the crow flies or as the worm burrows.
> 
> And now that I think about it, this is as true with a rectangular
> field as it is with a square one.

Assume: a spherical planet

If you are at the center of the planet/sphere, then all points of the
field are equidistant from you (by definition of a sphere).

As you move away from center to the backside of the planet (opposite
the center of the field).  The center of the field becomes the
furthest point--it is the only point you are walking *directly* away
from.  The corners become the closest.

Merlin