[AlexB138]

> .. you'll have isolated the most ambitious people ... forged a solid and mutually-respectful working relationship with them

You'll have found people who are willing to play petty games instead of having frank conversations about expectations. Those sorts of things are anything but mutually-respectful and encourage future childish behavior. There is nothing wrong with explaining "The meeting starts at noon. I expect everyone attending to be there at noon, and the meeting will be canceled if you're not there on time", there is a problem with expecting people to read your mind when their default mode of operation is to act differently than you expect.

[JumpCrisscross]

> There is nothing wrong with explaining

I do--and did--this. And then for about half the meetings nobody showed up for thirty minutes. My point is that setting the expectation by example--in addition to explicitly communicating it in advance--works.