For a minute, it seems like Bob Zalk has been locked out of his own construction site. We’re standing on the wrong side of a painted plywood wall at the Epcot theme park in Orlando, Florida, out of place in our plastic hard hats amid the mouse-eared tourists. Zalk, a 21-year veteran of Walt Disney Imagineering, the creative unit that oversees all new theme park and resort projects for Disney, is standing in front of a doorway in the plywood wall. He jiggles the knob a few more times, but it won’t budge. Then, just before we give up, he puts a little shoulder into it. The door bursts open, and suddenly we’re facing a building that looks like an airport terminal designed by Salvador Dal