walden

You’re right. I’ve always just typed two hyphens and called it good but technically it should be one long dash.

An em dash is --, two dashes. It’s a way to break up a sentence – sort of like a comma.

Apparently AI uses them a lot.

I’ve been in a similar chamber (Hypobaric instead of nitrogen). I remember everything because I was a chicken and put my mask back on at the very first sign something was off. One of the other participants couldn’t /wouldn’t put their own mask back on. It’s interesting to witness.