It is rude to not attend a meeting.
Harold has a meeting scheduled with his boss at eight o clock.
Harold wants to go to work in the morning.
Harold makes sure to get to work early enough to go to the meeting.
Harold gets to work at nine o clock in the morning and disregards the meeting even took place.
Harold learns a lot of important information at the meeting that helps him move up in his job.
Harold's boss calls him into his office because he is mad that he missed the meeting.