“Only use programatically” = computer-to-computer
“designed for circumstances like telling someone over the phone” = person-to-person
How is that not mutually exclusive?
Can you try that question again. I dont know what you’re asking.
Presumably that’s why five different addresses were given, as it moved over time far enough from the previous given address, that it was felt worth giving a new endpoint address.
What do you call evidence? Wikipedia lists a number of notable uses both success and failures, as well as an analysis which concluded
If W3W, or any addressing system, is to become critical infrastructure, relied upon by emergency services and other key agencies, then claims for ease of use and reliability should be thoroughly examined and empirically compared to alternatives, from standard street addresses to post codes to newer systems, like PlusCodes.
and
This work has tested some of the claims that W3W makes about their algorithm. These claims are not borne out under scrutiny which suggests that W3W should not be adopted as critical infrastructure without a thorough evaluation against a number of competing alternatives.
– A critical analysis of the What3Words geocoding algorithm - PMC