public function all_question_attempts_originally_in_slot($slot) {
        $qas = array();
        foreach ($this->quba->get_attempt_iterator() as $qa) {
            if ($qa->get_metadata('originalslot') == $slot) {
                $qas[] = $qa;
            }
        }
        $qas[] = $this->quba->get_question_attempt($slot);
        return $qas;
    }