There was a conversation I needed to have with another program manager, and I kept not having it. He didn't report to me, he was good at the job, and I didn't want to spend the working relationship badly. So I practiced it first, against a Gem built to play him. It pushed back the way he pushes back, told me exactly where I was hedging, and by the time I sat down with the real person, nothing in it was a surprise. Full prompt at the bottom of the post.