The book differentiates between the different types of thinking and how we need to use them all to come up with ideas that are creative in a sense that they are created using new patterns we create instead of reusing the same patterns that we usually recognize. In this chapter, the concepts were a bit abstract, and I didn’t fully understand what he meant by “Lateral thinking is needed to handle the perceptual choice.” He doesn’t explain how lateral thinking really works, but from my understanding of his description, it is coming up with different approaches to the same problem, while vertical thinking is used to develop those approaches.