"Schrader's Cat" is a thought experiment inspired by the famous Schrödinger's Cat concept in quantum mechanics. It illustrates the idea of superposition, where a system can exist in multiple states simultaneously until observed. In this scenario, the cat is placed in a box with a mechanism that can either kill it or leave it alive, depending on a random quantum event. The experiment emphasizes the paradox of quantum mechanics, where particles can exist in multiple states at once. Until the box is opened and the cat is observed, it is considered both alive and dead, highlighting the complexities of measurement in quantum theory.