In a previous life, I was in the Navy as a Reacto Operator in the engine room of a ship. Nothing was done in the operation of that power plant without having a very large book in front of you with a step-by-step detailed procedure to follow. For most things, there would be a person reading the procedure while you did what they said, and there would be a supervisor there watching. Going off script was punished.

My current job is …not like that. We are lucky if there is something written down, even if it is known to be incorrect.