"They had no concept of a duty of care to their users."

A Mastodon post by computer scientist David Chisnall has a very Unsung opener:

I have used vim since around 2000. I have written five books, a PhD thesis, a few dozen papers and over 150 articles with it. At this point, my higher brain functions are not engaged at all when I use a bunch of common vim commands, they just happen. Documents I wrote with anything else have random :w in the middle.

Chisnall goes on to talk about one specific vim feature:

Persistent undo is one of my favourite features of vim. […]