Anti-clockwise Mystery

[Ryushikaze]

There's no explanation that the poster on the wall uses circles?

Nope.

Do eye checks that use circles exist in reality?

They use all sorts of symbols.

VIII is a bit like Lost. A lot of meanings, yet cannot be proved or disproved.

Then there's no meaning that you can determine. So you cannot assert it as true. In other words, your 'meaning' is meaningless.