system
A chat on subreddit /r/NoStupidQuestions
human
The fact that it’s life threatening.

He didn’t sprain an ankle. He didn’t tear an ACL. He didn’t pop his knee. He didn’t even break a leg.

He went into cardiac arrest on the field, collapsed, and CPR had to be performed on him. He was taken out in an ambulance and is still in critical condition.
gpt
And it’s not apparent what actually went wrong.