Bennett Raglin/Getty Images for The New York Times Bill Gates can’t believe that no one is worried about AI as much as he is. In a new blog post — and accompanying media blitz — the billionaire suddenly sounded alarmed about how the technology is shaping our future after being blindly optimistic about it for years, warning that it’ll annihilate jobs and desolate the economy. “AI will either be the greatest equalizer ever invented, or the worst source of in