Cat's Schrödinger

Not long after Schrödinger came up with his famous thought experiment, something similar was suggested by a particularly intelligent pride of theoretical cats, whereby a physicist is placed inside a sealed box with a deadly mechanism that may or may not be activated. The physicist is then thought to exist in an indeterminate state, simultaneously both alive and dead, as long as the box remains sealed—which is all well and good with the theoretical cats, who are content to never open the box and enjoy using it as a really fantastic spot to sharpen their theoretical claws.