It depends of the context, as usual. It's usually not a problem for me, but sometimes I ask some of my clients that they do something technical on their part so

It depends of the context, as usual. It's usually not a problem for me, but sometimes I ask some of my clients that they do something technical on their part so I can continue my mission. Then someone at their IT department says it can't be done, or say it will take <very long time>, cost <lot of money>, etc. My client arm wrestle with them for a bit, then turn back to me and ask if I can do something anyway. So I charge them to do the task that can't be done, and it doesn't take that much time or money. But I learned to do that with gloves, and tons of ass licking, because it does make the other party look bad.