In The Giver, why was Jonas' number skipped during the assignment ceremony?

In , the
Chief Elder announces each child's assignment to the community during the Ceremony of Twelve.
Following Fiona,expects his number to be called but is skipped as the Chief Elder announces
Pierre's assignment. Jonas initially panics and believes that the Chief Elder made a mistake.
Once the Chief Elder is done announcing the rest of Jonas's classmates, she explains to the
community that Jonas has not been assigned but has been "selected" to be the
community's next Receiver of Memory. She then elaborates on the importance and honor of the
special assignment as Jonas is called to the stage. She also lists the five essential qualities
needed to be the next Receiver of Memory, which are intelligence, integrity, courage, wisdom,
and the Capacity to See Beyond. Jonas is apprehensive and nervous about his new assignment but
is relieved that he was finally called to the stage in front of the community. Essentially,
Jonas was skipped during the Ceremony of Twelve because his assignment was such an
important selection that it needed to be addressed separately from the rest of the group.