The missionaries of the medieval Church spread Greco-Roman Logic around the world (the right/wrong system) which is very good at judgment. Today, we call this â€œinside-the-square thinkingâ€.
However, in a post-Darwinian, fast-changing and hi-tech environment we may also need â€œoutside-the-square thinkingâ€.
Lateral Thinking is very useful for this kind of disruptive, pattern-breaking, innovation. I have the first PhD in the world in Lateral Thinking, so I am in favour of it!