Schrodinger's Cat

Radioactive elements and hydrogen cyanide are placed in this box.

Inside is also a Geiger counter, and when alpha particles emitted by the radioactive elements are detected by it, the hydrogen cyanide will be released.

Youmu-chan is put inside.

Now is Youmu alive?
Or is she dead?

Well, we can't know without opening the box.

Right, whatever, just let her out.

The answer is half-dead!

One hour later