Gravity is usually presented as the most familiar of nature’s forces, the quiet background pull that keeps feet on sidewalks and planets in orbit. A growing group of physicists is now treating that ...

The idea that reality might be a kind of cosmic software has shifted from late-night dorm debate to a live question in physics and philosophy. A growing body of work now treats the “simulation ...

The simulation hypothesis—the idea that our universe might be an artificial construct running on some advanced alien computer—has long captured the public imagination. Yet most arguments about it rest ...