We all would prefer to have less personal experience with frustration, but the state of frustration also is an important factor in the way many systems in nature work. Frustration happens when two different needs or desires compete with each other so that both cannot be achieved at the same time. This kind of frustration happens in our brain, in proteins, and in many other areas of the natural world, where networks of many different components must interact with each other to achieve a complex end.
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