Picture this: You’re strolling through a bustling city street, but your eyes see something extra—a holographic billboard floating above a café, showing a limited-edition coffee blend. Or maybe you’re sitting in a classroom, and the history textbook suddenly comes alive with 3D animations of ancient battles. This isn’t sci-fi; it’s the increasingly tangible world of virtual reality (VR) and augmented reality (AR), technologies that are quietly rewriting how we interact with the world around us.