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I naively assumed this would be about localised caching. You'd think straight-line distance would be a reasonable proxy for speed.

Hence you could have

* google.com <LOC San Francisco>

* google.com <LOC London>

and pick the right one

but that's not really how it works at all :(

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I'd imagine that there are some sharp edge cases where a nearby straight-line distance is a suboptimal choice due to peculiarities of submarine cables or irregular point to point links of some other sort.

And that’s only on the physical layer. Then you’d get into the weird and wonderful world of BGP routing.

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