I still prefer the benefits that come with the hierarchical approach. You can learn where things are, if you're wrong and didn't know it in advance, you're stil

I still prefer the benefits that come with the hierarchical approach. You can learn where things are, if you're wrong and didn't know it in advance, you're still close to where you need to be, you can get a sense of how far away things are from each other even without looking them up or being online, and you can use context to reduce the amount of information you need to remember / communicate (e.g. say you're communicating 4 locations close to each other, most likely you can do that with 3+4 words with a hierarchical system). The benefits of a random allocation vanish if you are building an application where Abu Dhabi, Malaysia and Paris are all reasonable answers. The w3w case is particularly bad because their wordlist is enormous and has so many ways you can confuse things. I still think that a hierarchical system with an optional checkword/digit/emoji is the best solution to situations where you want to be 100% sure you got it right first time, but I accept that maybe the emoji is a bit too cute, and a normal word or number might be better. I think the endgame for these types of systems doesn't need to assume online usage. It'd be fantastically useful in vehicle GPS systems for example, especially in countries with poor addressing.