Lateral thinking is a method of generating ideas without being bound by established theories or concepts in order to solve problems. [It was first proposed by Edward Debono around 1967. De Bono refers to conventional logical and analytical thinking as Vertical thinking, which is effective for deepening logic, but difficult to generate novel ideas. In contrast, horizontal thinking is a method that generates intuitive ideas by looking at things from a variety of perspectives. Horizontal thinking - Wikipedia
This page is auto-translated from /nishio/水平思考 using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I’m very happy to spread my thought to non-Japanese readers.