Duck and Cover: It’s the New Survivalism

THE traditional face of survivalism is that of a shaggy loner in camouflage, holed up in a cabin in the wilderness and surrounded by cases of canned goods and ammunition.

It is not that of Barton M. Biggs, the former chief global strategist at Morgan Stanley. Yet in Mr. Biggs’s new book, “Wealth, War and Wisdom,” he says people should “assume the possibility of a breakdown of the civilized infrastructure.”