On its initial publication in 1998, John R. Lott's More Guns, Less Crime drew both lavish praise and heated criticism. More than a decade later, it continues to play a key role in ongoing arguments over gun-control laws: despite all the attacks by gun-control advocates, no one has ever been able to refute Lott's simple, startling conclusion that more guns mean less crime. Relying on the most rigorously comprehensive data analysis ever conducted