The authors describe various cultural proclivities (or patterns), and how they can be used to enhance our work. However, they also stress the potential risks of relying too heavily on these proclivities, and issue the following warning:
"While it may be useful and necessary to see the patterns in experience, human history is littered with the wreckage of us-them thinking."
1. What are the authors saying here?
2. Give a real-world example from history, which illustrates the kind of "us-them thinking" the quote warns against.