The Old Improbable Island Wiki

1. According to Schrodinger, his cat-in-a-box is theoretically both alive and dead, as long as you don't check.
2. Both alive and dead = Undead = Zombie. It's simple maths.
3. Cats are innately magic, demostrated by the fact that in HARD SCIENCE a cat can be a zombie.
4. Dr Immprobable's cat was only invisible when people could observe it.
5. Since Schroodingers cat¹⁾ was a thought experiment it stands to reason that observation includes thinking about the cat.
6. We live on Improbable island, not Schrooodinger Island.²⁾

Therefore, as long as you are aware of the cat, its invisible and planning to gnaw your brains out. Even the zombies brains.

Q.E.D.