You should probably account for the demographic bias of HN before crediting the entire civilization.
I'd like to believe the HN crowd is only slightly more refined than the hoi polloi but yea.
I've come to a whole new understanding, as a computer scientist that signalling still matters and we just suck at it.
If you read the comment you wrote you may see that it casts all pre-computer people who actually dressed up in a very poor light and I'm sure some of them could set us straight on many things related to life skills.
The standard signals are a shirt and tie, jacket and pocket square with other accessories.
Now we're on a different playing field with other less overt details and our vehicles have become our outerwear.
We've both got each other thinking a little. Fist bump to that!