This document discusses the importance of teaching higher-order thinking skills in schools. It argues that while people can think spontaneously, explicitly teaching thinking can improve the quality and effectiveness of students' thinking. The document also notes that educational achievement and intelligence do not necessarily reflect one's ability to think critically and that most individuals need guidance to develop higher-order thinking. Finally, it states that thinking skills should be an integral part of the school curriculum and explicitly taught across subjects in order to prepare students for a rapidly changing world.