Brainy concepts with a wacky bent have long been center stage at the Overtime Theater, and playwright Lemuel Mitchell’s Schrodinger’s Catfish is no exception. For starters, the name of the play — which will run May 17-25 at the Overtime — references physicist Erwin Schrödinger’s pivotal “thought experiment” that placed an imaginary cat in a closed box with a flask of poison and a radioactive source connected to a geiger counter. First discussed with Albert Einstein in 1935, the concept illustrated one of the key principals of quantum mechanics: that unlike the unseen feline — which was either dead or alive inside the box — particles in the microscopic realm can exist in multiple states at once.