Meeting buffer ending times
I was also taught that a meeting should be scheduled for at least 15-30 minutes longer than you intend to run it. This allows you to have buffer time for discussion and creates the impression that the meeting ended early when you don't need to cross over into the 30 minute buffer having the participants leave happier thinking they have a head start on the rest of their day and therefore, according to the training, more likely to accomplish their assigned tasks.
I like that. Plan on marching for 2 miles and cut it back to 1.75 at the end.
That's a great "trick". It leaves room to go over a bit without disrespecting anyone's time that they've blocked out for the meeting, but hopefully, gives a sense of accomplishment and satisfaction with "being done early". Great idea.
Wonderful way of staying "ahead of schedule". Short poignant meetings are often the ones that people benefit from the most.