One finds that those experts who focus on politics; or on history; or on economics; etc; etc; etc; usually do not see the implications, from other fields, for their fields and their conclusions, because they have been trained to ignore or to minimize other fields' work and conclusions.
Yet, sometimes, an analogy from another will inform a particular branch of one or another field. It is usually even part of the definitional process of specializations, that they need, want, and do, bracket off other fields and methodologies from theirs. Call it turf; call it whatever.
One sad thing about the underlying principles of many fields is their simplicity and paucity, in spite of a lot of technical elaborations associated with the principles. The underlying principles can be rather simplistic if you take a dispassionate look at them. One good example is, say, 'greatest good for the greatest numbers'. Sounds like a banner to march under doesn't it?
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