STAGES OF LOOKING AT THIS, ENUMERATED.
1. I don't get it.
2. Still don't get it, not seeing it.
3. OHHHHHHHHHHHHHHH. Oh my god. Okay that's bad.
4. This is like one of those kids' museum optical illusions/visual riddles/tests they have in that big room they always have in kids museums. There's like a coil that alternates hot and cold water that makes your brain think your hand is getting burnt. There might be a few refraction experiments, and one tornado that used to work but no longer does even though there's no sign saying it's broken.