Help create a curious habit, occur with the participants. When you can't answer a question, or answer a test participant will learn more, causing a very curious habit.
Help build the habit of learning to happen to the students. When you can not answer the question or answer quizzes learners to study further causing more curious habit.
help create a habit in the inquiry to the students. When can't answer the question or answer the test students to study more, causing habit of curiosity.