system
A chat on subreddit /r/me_irl
human
My issue was that I read it "har-bing-er" while also knowing "har-bin-ger" was also a word. It wasn't til one day I was playing magic the gathering and realized they were one in the same. I felt really dumb.
gpt
While we’re on the subject of correct English, the phrase is, “one *and* the same”.

Edit: formatting.