I think there’s a bit of false equivalence going on here as well regarding zip codes (several thousand addresses, or thereabouts) and a UK postcode (maybe 10-15 houses).
You could genuinely address a letter to me using something like:
4, L226ET
That’s all it would take. No, that’s not my address, characters within changed to protect the guilty, but my address could look just like that.
First was a house in a small cul de sac – with no number just a name. Second was a flat – there are two number 1s in the same post code.
That is, in a navigational sense, superior to ordinary street addressing.
Take something like N90 W17567. Once you understand the system, you already know approximately where the destination is: the road lies about 90 blocks north of the baseline, while the property is about 175.67 blocks west of the north-south baseline. The address is essentially a human-readable coordinate pair.
In other words, if someone gives you an address like N90 W17567, and you understand the grid, you immediately know roughly how far north and west the property is without having to look up the street or pull out a map.
throw0101a•32m ago
* https://www.mjt.me.uk/posts/falsehoods-programmers-believe-a...
* 2013: https://news.ycombinator.com/item?id=5791489
* 2015: https://news.ycombinator.com/item?id=8907301
* 2020: https://news.ycombinator.com/item?id=24926417