Did a Person Write This Headline, or a Machine?

The tech industry pays programmers handsomely to tap the right keys in the right order, but earlier this month entrepreneur Sharif Shameem tested an alternative way to write code. First he wrote a short description of a simple app to add items to a to-do list and check them off once completed. Then he submitted it to an artificial intelligence system called GPT-3 that has digested large swaths of the web, including coding tutorials. "I got chills down my spine," says Shameem. "I was like, 'Woah something is different.'" GPT-3, created by research lab OpenAI, is provoking chills across Silicon Valley.