I read this question about giving your iPhone & passcode to another person. The OP asked
What's the things the can do and what trace would be around to identify that action?
To my reading and understanding, the OP was asking a hypothetical question. Maybe that wasn't the intention but the OP has an extensive history on SE sites so I'm sure they knew what was in-scope and out-of-scope for this site.
I voted to close the question as 'too broad' because the question is so wide and encompasses so many variables that the only real answer is between 'everything' and 'nothing'. If you give your device and passcode to someone then they can do everything you can do with your device.
So I was surprised to see not one but two site mods contribute edits and an answer to this question (bmike and nimesh-neema). Nimesh even stated that it was a 'very good question' although he didn't actually fully answer the questions raised as of this writing. (no insult, nimesh, just using this as an example).
I'm struggling to understand how such a broad question would be considered on-topic for this site?
If the OP had only asked something along the lines of
"For <insert app name here>, how can I trace the actions that someone with my passcode executed?", at least I would consider that a focused, specific question that can be answered. I debated editing the question down to something similar to that but decided against it on the grounds that it might violate the intent of the author.
This should go without saying but I'm going to state it anyway: I'm not trying to insult anyone associated with this question. I just trying to understand how mods and I can see a question so differently.