The networks are very diverse, but the resilient ones are learning organizations that quickly adapt to changing conditions, operating in a virtual world of social media and hidden financial transactions where they present few tangible targets to defenders.

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By the 1990s, when some of my clients began to reach retirement age, the hidden flaws showed up when the projections fell below their targets.

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Of the many loopholes hidden away in the tax code, percentage depletion is one of the easiest targets and at the top of the list.

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