I’ve worked as manager of small groups of people over the years, and sometimes, it’s okay to be stone hearted if certain facts need to be made plain.
The trick is keep from conditioning one’s self to enjoy being stone hearted with out any attempt to negotiate, because then, it’s not so much about trying to train or educate the other worker, it’s more about the manager enjoying that power struggle, and needing to ‘prove’ to himself and those present that he, as the manager can jolly well crack the whip whenever he pleases, his workers will be expected to jump.
He was so detached, he couldn’t see anything 5” in front of his face. We were on a special project for the CIO and this guy went to the CFO to tell him that he should be running the effort, not the CIO. Since the project was in another building,security called our location & said he was not to be let in under any circumstances as he was terminated.