SHORT AND NOT-REALLY-FUNNY STORY.

X: Mooch Mooch.

Z: If you keep making sound like that your blind cat would think you're a mouse and start to be friendly when meeting a real one.

X: But she's blind, she can't see a mouse. She thinks every animal kind is her kind.

Z: She can't see a kind but she can smell one. Every kind smells different.

X: True. But it doesn't mean if something smells different, it would be a mouse, which means she wouldn't assume it was a mouse immediately.

Z: Could be. But she'd know it wasn't a cat.

X: Not really. She could think: "This cat is weird."