I think it is more of a if you are not there right now, and won't be able to respond, I am not going to write it all to wait for an answer later. I think most people want to make sure someone is there to respond before committing to a conversation.
But I find THAT attitude to be quite rude. You are prioritizing your preferences when it's me that you're reaching out to for help. Nobody's saying you have to write a complete and detailed problem description in your first message, but give me something to know what i'm getting into.
BAD: Hey, you there?
GOOD: Hey, you there? I'm trying to do X but I'm running into some issues and I wanted to get your advice.
Once I've responded and you know you have my attention, then you commit to filling me in on the gory details.
That "GOOD" is only marginally better than just "hi". It still doesn't include the actual point, so after me replying "yes I'm here" you are not much wiser and I'm not still on the hook of having to wait for you to type the actual thing.
Surely it’s more efficient (for both parties) to type and be able to read the whole thing and then respond meaningfully?
E.g. If you’ve just say “hi”, two hours later I get to my DMs and say “hey what’s up?” and you end up not following up with the “actual” message straight away, let’s say another hour later, this all took way longer than necessary.
The no-hello approach just makes sense when dealing with asynchronous messaging platforms such as Slack. IMO, not following the no-hello approach is bad etiquette and there’s a ton of people out there who still don’t really get that.
Hi. I have a question but if you're not immediately available to discuss it then I won't go into it and move on for now. Are you available and interruptible for a few minutes?
Historically virtually all cities were located either along coastlines or major river transport, as shipping was far and away the cheapest way to move large volumes (and masses) of goods. Even today that pattern remains strong.
Tectonic movement is also associated with factors that often produce economically-critical natural resources, from minerals to simply fertilising soil. Australia, which sees little seismic activity, has famously infertile farmland, in which even minuscule additions of mineral fertilisers --- not the Big Three of nitrogen, phosphorus, and potassium, but trace minerals such as iron, copper, selenium, zinc, and manganese. Again, that's where cities tend to form.
And coastlines are strongly associated with earthquakes, especially those along subduction zones (Western Americas, Eastern Asia). Not only do those have many earthquakes, but some of the largest and most destructive, along with tsunamis which can further the devastation.
Note that coasts nearer to rift zones (eastern Americas, western Europe, both west & east Africa) have fewer earthquakes. Several of those also have major populations.
