Schrödinger’s Cat is a famous thought experiment in quantum mechanics. Imagine a cat inside a box with a vial of poison triggered by a quantum event. Until we open the box, the cat is both alive and dead at the same time—a paradox meant to highlight the weirdness of quantum theory.

This thought experiment challenges the idea of wavefunction collapse—the idea that quantum possibilities exist in superposition until observed. It also fuels debate about the many-worlds interpretation, where instead of one outcome happening, reality splits—one universe where the cat lives, another where it dies.

Why is this important? It shows how quantum mechanics breaks our classical intuition—suggesting that observation might shape reality itself.