By Paul Kleyman New America Media MOUNTAIN VIEW, Calif. &mdash;Felipe Garcia, 79, looks up with a ready smile as his two-year-old granddaughter, Marina, orbits his shuffling legs&mdash;her mother Elena keeping a sharp eye on the toddler to avoid any mishaps around the family&rsquo;s modest home in Silicon Valley. Elena says Marina doesn&rsquo;t quite understand yet [...]