By BERNARD CONDON and PAUL WISEMANNEW YORK (AP) â¿¿ Five years after the start of the Great Recession, the toll is terrifyingly clear: Millions of middle-class jobs have been lost in developed countries the world over. And the situation is even worse than it appears. Most of the jobs will never return, and millions more are likely to vanish as well, say experts who study the labor market. What's more, these jobs aren't just being lost to China and other developing countries, and they aren't just factory work. Increasingly, jobs are disappearing in the service sector, home to two-thirds of all workers. They're being obliterated by technology. Year after year, the software that runs computers and an array of other machines and devices becomes more sophisticated and powerful and capable of doing more efficiently tasks that humans have always done. For decades, science fiction warned of a future when we would be architects of our own obsolescence, replaced by our machines; an Associated Press analysis finds that the future has arrived. ___ EDITOR'S NOTE: First in a three-part series on the loss of middle-class jobs in the wake of the Great Recession, and the role of technology. ___ "The jobs that are going away aren't coming back," says Andrew McAfee, principal research scientist at the Center for Digital Business at the Massachusetts Institute of Technology and co-author of "Race Against the Machine." ''I have never seen a period where computers demonstrated as many skills and abilities as they have over the past seven years." The global economy is being reshaped by machines that generate and analyze vast amounts of data; by devices such as smartphones and tablet computers that let people work just about anywhere, even when they're on the move; by smarter, nimbler robots; and by services that let businesses rent computing power when they need it, instead of installing expensive equipment and hiring IT staffs to run it. Whole employment categories, from secretaries to travel agents, are starting to disappear.