optical illusionsREUTERS/Darren Staples

The human brain is surprisingly easy to trick. 

Light can bend and warp our perspective of things, colors can appear completely different from one moment to the next (remember "the dress"?), and sometimes our brains can't figure out the true shapes and sizes of objects. 

These 19 perfectly-timed photos will remind you human perspective isn't foolproof, and sometimes the world isn't the way it seems.  

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