In this day and age (as the tutorial pointed out), everyone is pressed for time. A clear vision is a wonderful thing, but won't get a leader very far if there's a pattern of asking more and more of fewer and fewer staff (with few if any incentives). This is an unfortunate result of the horrible economy, and something that takes extra finesse to deal with. How can we, as leaders, deal with this increasingly common situation?
A good leader will recognize when her/his employees are overwhelmed and help them prioritize - the leader will perhaps even take on additional work him/herself to alleviate stress for employees.