A Polygraph in Your Pocket
Updated at 2:15 p.m. ET on July 29, 2024 Journalists have a saying about the importance of confirming even the most basic facts: “If your mother says she loves you, check it out.” Recently, I decided to follow that advice literally, with the help of an AI-based lie detector. The tool is called Coyote. Trained on a data set of transcripts in which people were established as having lied or told the truth, the machine-learning model then tells you whether a statement is deceptive. According to its creators, its textual analysis is accurate 80 percent of the time. A few weeks ago, I called my mom. After some initial questioning to establish ground truth—how she spent her vacation in France, what she did that morning—I got to the point. “Do you love me?” I asked. She said yes. I asked why. She listed a handful of positive qualities, the kinds of things a son would be proud to hear—if they were true. Later, I plugged a transcript of her answer into Coyote. The verdict: “Deception …