Blunder: Why Smart People Make Bad Decisions : We all make bad decisions. It's part of being human. The resulting mistakes can be valuable, the story goes, because we learn from them. But do we? Historian Zachary Shore says no, not always, and he has a long list of examples to prove his point. From colonialism to globalization, from gender wars to civil wars, or any circumstance for which our best solutions backfire, Shore demonstrates how rigid thinking can subtly lead us to undermine ourselves. In the process, he identifies seven "cognition traps" to avoid.