I think my main message is that by being so definitive in the rejection of things, you close down the possibility there is something you don't know. For example

I think my main message is that by being so definitive in the rejection of things, you close down the possibility there is something you don't know. For example, the moveFile() thing, maybe this is some kind of fingerprinted DRM library where "nothing can change". Just leaving open the possibility there might be a reason removes a lot of friction. And btw, this moveFile example is so horrible it probably does require some yelling :-)