Literally, not figuratively, zero idea.
...
I'm a PhD researcher in Deep Learning... But I had to DuckDuck why differentiation works the way it does to explain it for a friend the other day. I still can't remember what happens when you differentiate minus powers. Does x^-1 become a squared fraction, or fraction of fraction...? Who knows.
I've lived in Linux for years now... Totally forgot how to set up a new user account last week.
I burnt my soup last night. I BURNT A LIQUID.
...
Did you end up getting it right? Yes? That's fine then.
You're human, not a computer. You make mistakes and you forget things. Especially when it's complicated & technical.
If you learn to stop beating yourself up, everything gets easier (he says not quite being there with it yet myself).