Strong Economy Means Tougher Competition NAHB economist predicts stable growth, stiff challenges When David Seiders speaks, builders listen — or at least they should. As chief economist for the National Association of Home Builders, Seiders analyzes the economy from a builder's perspective, without glossing or cheerleading. So contractors took special notice when Seiders recently predicted that the present economy of moderate, steady growth, low inflation, and low interest rates will likely last through the decade. If he's right — and he usually is — then the construction industry is in the midst of what will be the longest expansion in U.S. history. "This sounds like great news, and it is," Seiders wrote in the June issue of NAHB's