The hash question is just something from the top of my head. I normally fit it to the situation.

I absolutely take nervousness into account, as I can relate to it.

The thing is, I need to know if the person can push back in some way. it's a hard thing to do in interviews, but also the first point for me to check how a person reacts

I've been bitten too many times, with dev coworkers who don't give at least a little resistance when vague or stupid tasks show up. Only to notice hours or days later, when something was done completely the wrong way