Ya, sorry, while I often work on my laptop, I’m on my large monitor right now and just had this thread open in my periphery. I mostly understand why it doesn’t, but I feel Discourse should have at least a small grace period between when you hit “<- Reply” and when others can actually see it (as HN does). It’s especially BS when creating a post and you accidentally submit it as then there is a permanent record of your mishap, even if you edit it immediately.
Anyway, I’m getting WAY off topic at this point.
I’m now thinking of how I can improve here, although always thinking about the times I don’t have my mappings handy. While I’m heavy into the mnemonics as a Vim user, there are a few mappings I have that are purely about convenience (I had 
