Walt Disney World just opened a new ride, “Sum of All Thrills,” that lets kids design their own thrill ride, then actually ride it — aboard a robotic simulator. How cool is that? And how potentially barf-inducing? It’s sponsored by Raytheon, the defense and homeland security contractor, as part of Epcot’s Innoventions Pavilion. Raytheon’s VP says their goal is to boost middle schoolers’ interest in math and engineering. What do you think. Cool? Not?