Iran's Supreme Leader Ayatollah Ali Khamenei has called the Internet a threat to national security and a dangerous double-edged knife that has benefits as well as risks.

WSJ: Cyberattack Hits Iranian PCs

As Wilson tells the story, the Cardinal became so agitated one night, observing a dinner guest pick his teeth with the double-edged knife still in use, that he ordered blunt knives for his household.

NEWYORKER: A Fork of One��s Own

It was the tou the wide, well-honed, flat-edged whacker of a knife that Chinese cooks used for everything from butchering to dicing and fine slicing and the chopstick, which, in the Song era, came into common use.

NEWYORKER: A Fork of One��s Own