At work today I had to do a procedure that was new to me, but someone else in the office had just done it earlier this week, I was told, and wrote instructions, so I don't have to figure it out on my own. Great!
Except it was one of the worst sets of directions I have ever read. It was very vague, left out a lot of important stuff, and was actually filed in the wrong place--so you thought you'd use X with it, because that's where it was filed, but really you were supposed to use Y. Imagine a recipe that says "milk" when it means "buttermilk," leaves out bits like greasing the pan, and is filed under "slow cooker recipes" when really, you're supposed to use the stove.
I only figured out the last bit because I saw some packaging the co-worker had thrown away, which clued me in that it was filed wrong. In other words, my co-worker's trash was more informative than her instructions. And, there's part of her instructions that I still haven't found precedent for, so I have no idea where she got that from.
It would have been faster, and far less frustrating, for me to just figure it out on my own.