The Grace Effect: How the Power of One Life Can Reverse the Corruption of UnbeliefThe Grace Effect Simply defined, the grace effect is an observable phenomenonthat life is demonstrably better where authentic Christianity flourishes. What does Christianity give us beyond televangelists, potlucks, and bad basketball leagues Not much, according to the secular Left. The world, they say, would be a better place without it. Historian and Christian apologist Larry Taunton has spent much of his career refuting just this sort of thinking,