...if the isotope decays, the cat dies, if not it lives, and there’s no way to be certain which until the box is opened and the cat observed.
If it’s dead, good.
If not, the box is rigged with explosives, there are snipers on the nearby rooftop and, worst case, I am myself heavily armed.
There’s a 50/50 chance the isotope decays, but I promise you, once observed, the cat’s not making it out alive.
Because there are two lessons to be learned today.
One: something about quantum mechanics.
The other: There’s more than one way to kill Schrodinger’s Cat.