After Steve Jobs anointed Walter Isaacson as his authorized biographer in 2009, he took Mr. Isaacson to see the Mountain View, Calif., house in which he had lived as a boy. He pointed out its “clean design” and “awesome little features.” He praised the developer, Joseph Eichler, who built more than 11,000 homes in California subdivisions, for making an affordable product on a mass-market scale. An
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