On: Show HN: Give 7B people an instant physical addres...

[SamBam]

That's simply wrong, and assumes that everyone in the world lives in the situation you do.

What3Words (the commercial equivalent) has only been around three years, and look at its usage:

https://en.wikipedia.org/wiki/What3words#Usage_and_awards

A single usage (Mongolia Post using it to deliver mail) is enough to discount the idea that it's a non-problem: http://mongolpost.mn/more/156