The Download: the Pentagon’s AI-powered lie detector and young organ limits

Plus: ChatGPT helped the Tumbler Ridge shooter focus on attack tactics.

This is today's edition of The Download , our weekday newsletter that provides a daily dose of what's going on in the world of technology.

The US government wants to spend $30.3 million over the next five years on an improved lie detector, according to a Department of Defense budget request.

The program, called “Polygraph+” or “Polygraph Next,” will focus on scoring algorithms that use AI and machine learning, as well as a technique called “standoff sensing,” which can take physiological readings from a person without attaching a device to them.

The project aims to improve the accuracy and reliability of polygraph assessments. But it could just be the latest in a long line of failed attempts to use technology to detect lies.