On January 21, Patricia Gingrich was about to sit down for dinner when her landline phone rang. The New Hampshire voter picked up and heard a voice telling her not to vote in the upcoming presidential primary. "As I listened to it, I thought, gosh, that sounds like Joe Biden," Gingrich told Al Jazeera. "But the fact that he was saying to save your vote, don't use it in this next election -- I knew Joe Biden would never say that." The voice may have sounded like the United States president, but it wasn't him: It was a deepfake, generated by artificial intelligence (AI).

I'm Paul Thornton, The Times' letters editor, and it is Saturday, July 16. How much more terrorism can France take? After yet another attack in that country -- this time in Nice, where a driver plowed a truck into a crowd of Bastille Day revelers -- at least 84 people are dead and authorities are busy gathering evidence to determine how it happened. But in the United States, some talking heads seem to possess answers that French investigators have yet to produce. Newt Gingrich, for example, called for government monitoring of mosques, a recommendation that earned him the scorn of The Times' editorial board: In the face of such a threat, people need leaders adept at analyzing data and thinking creatively about intelligence gathering and risk reduction.