At least none of them had surnames starting with 'A' or 'Z'. It meant that Cassie had time to watch what the kids native to this reality did, so she could be sure to do it right.

When her named was called, she stepped forward and dripped her blood into the bowl of live coals. Fortunately, a couple people had already chosen Dauntless, so she was prepared when the entire faction began to hoot and holler like monkeys. Cassie resisted the impulse to roar back, or thump her chest with both fists -- best not to make people think too hard about whether or not they'd seen her around Abnegation.

She did thrust her clenched-and-healing fist into the air above her head though, before joining the crowd.