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Knowledge Cats Dirty Minds
Hidden objects Forced Perspective Landmarks

Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Prehistoric ambiguous illusion

The history of optical illusions in art

Bezold effect fabric

Bezold Effect

Rorscharch inkblot

What Optical Illusions Reveal about You

Hidden Message

Source/credit: lg240

This image was created by AI. The gaps between the stones spell out the text: “The stones will cry out”

This is a phrase from the Bible, Luke 19:40, in which Jesus says, “I tell you, if these become silent, the stones will cry out!”
Stones cry out illusion solution

More optical illusions:

World's Worst Carpet
Bride Waterfall
Legs up
Plane Crash
Floating either way
Cat Head
Shadow cat
How many pipes?
  • Pareidolia
  • Physical illusions
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cactus rock climbing

Rock Climbing

Trees

troll in the park

Troll in Allegany State Park

Rocks