Once a manager achieves a reputation forbeing an outstanding listener, the staff lines up to discuss many matters.

MacKay first observed this effect on the wallboard of a BBC studio: the broadcasting staff had been annoyed by illusory shadows running up and down blank strips between columns of parallel lines.

That's why cooking schools and restaurants will often have chefs work out front as waiters so the kitchen staff can interact with customers and see what it's actually like on the front lines.