. . .Fryer believes there's more good research to be done on incentives. But he doesn't think incentives alone can fix our schools; he is increasingly convinced that the answer will involve a combination of reforms and that the interaction among those reforms will matter more than any single change in isolation. And whatever we do, he says, we have to test it first -- and fearlessly. "One thing we cannot do is, pay their kids every week. (Interestingly, the two places Fryer's experiment worked best were the ones where kids got feedback fast -- through biweekly paychecks in Washington and through passing computerized quizzes in Dallas.) we cannot restrict ourselves to a set of solutions that make adults comfortable. . .