Terry Pratchett. Ladies and gentlemen (№ 359502)

The elf looked into the innocent eyes of McGrath and opened the box.
Grebo was imprisoned not the most pleasant moments. From a formal point of view, the cat closed in a box can be either alive or dead. But to determine this you need to open the cover. This is the action associated with the opening of the box determines the state of the cat, although scientists are wrong - in fact, States the cat could be three, namely: the Living, Dead and furious.