ILLUSION 493

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You immediately think of letter E. But why is that?
None of the lines presented depict letter E even closely!
Our brain immediately presumes this is something known to us,
and tries to connect the shadowy outlines with the known symbol.
What if we were born in a society where this symbol wasn’t used,
and is nowhere to be seen at all?
Could we then see the lines without making presumption of what they represent?
Can you force yourself just to see some random lines instead of E? Try

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