The Robots Among Us

Fremont resident Rakesh Guliani likes to say that a Roomba robotic vacuum cleaner saved his marriage. Messy floors had been causing friction, says the 41-year-old Guliani (pronounced Goo-liani). His wife, Kavita, 35, was particularly annoyed by the footprints he and their daughters, Ashna, 10, and Rhea, 6, tended to track through the house. "I am soccer coach to both of them, and when we come in with our dirty cleats, I am more tolerant of that because I am tracking dirt, too," says Guliani, vice president of the job-placement firm Park Computer Systems. He vacuumed several times a week but it never seemed enough to satisfy his wife, a technical writer for Google.